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2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1992805683 M.D.
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Narindar Singh, M.D.

Critical Care Medicine (Internal Medicine) Physician in Santa Ana, California.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,916 in Critical Care Medicine (Internal Medicine) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
642
Medicare Part D claims · 102 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
43%
generic claims · 57% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
17.3/100
▼ 66 pts below national avg 83.5 · Penalty band
Industry payments
$351.97
17 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Narindar Singh, M.D. reported a CMS MIPS final score of 17.3/100 - below the 83.5 national average - and filed 642 Medicare Part D claims in 2024.

17.3/100
MIPS score · -66 vs avg
642
Part D claims, 2024
43%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Federal trust snapshot

What official records show about Narindar Singh, M.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1992805683), first enumerated 09/23/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 642 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 17.3/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Board certification signal

    Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.

    Source: NUCC taxonomy + CMS participation heuristic

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • Reported

    Industry payment transparency

    $351.97 in reported industry payments (17 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • State context

    State board disciplinary context

    California statewide board action statistics are published annually — these figures describe aggregate state activity, not Narindar Singh, M.D.'s individual license status. Verify directly with the state medical board.

    Source: MBC annual report 2023

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1992805683 · Critical Care Medicine (Internal Medicine) Physician

NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1992805683
  • ENUM-LEGACY 2006
  • TAX-MID 7K Critical Care
  • MIPS-LOW 17.3/100
  • RX-LIGHT 642
  • BOOK-LIGHT 714 in California
  • PHOTO-FINISH Dayaker Gagadam · ±0.1

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Narindar Singh, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

17 ≥ 2nd percentile 2% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). This entry sits in this band. 20–30: 3,069 measured providers (1%). Above this entry. 30–40: 2,746 measured providers (1%). Above this entry. 40–50: 2,928 measured providers (1%). Above this entry. 50–60: 5,882 measured providers (1%). Above this entry. 60–70: 13,906 measured providers (3%). Above this entry. 70–80: 94,570 measured providers (21%). Above this entry. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Narindar Singh, M.D. sits

This provider among critical care medicine (internal medicine) physician peers

Across the 1,548 critical care medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Narindar Singh, M.D. writes more Part D claims than 49% of them and scores higher on MIPS quality than 2% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.448.873.297.7Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 25Narindar Singh, M.D., Part D claim volume, percentile in specialty: 49 · MIPS quality, percentile: 2
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one critical care medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Narindar Singh, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Narindar Singh, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Narindar Singh, M.D.?

Below national average

NPI registry status

Active

Issued 09/23/2006

NPI 1992805683

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,916 US NPIs in this specialty

Medicare Part D claims

642 42% vs specialty avg

2024 prescription claims

Specialty avg: 1,103

MIPS final score

17.3/100 66.2 pts vs avg

Penalty band band

vs 83.5 national avg

Specialty distribution in California

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among California providers

California providers
Behavior Technician17.9%Marriage & Family Therapist5.4%Student in an Organized Heal…5.1%Mental Health Counselor3.7%Pharmacist3.4%Clinical Social Worker3.1%Critical Care Medicine (Inte…0.1%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Narindar Singh, M.D.'s 2023 MIPS final score plotted against the Critical Care Medicine (Internal Medicine) Physician national average

Below national average
MIPS Final Score
17.3/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%17.3%
MIPS final score (Critical Care Medicine (Internal Medicine) Physician) - 17.3/100 vs national avg 83.5
How MIPS and board certification work

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Practice Address

999 N TUSTIN AVE STE 1
Santa Ana, CA 92705
(714) 836-6800

Provider Details

NPI 1992805683
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 09/23/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

17.3404
Final Score
Measured-score avg: 83.5
0
Quality
57.8012
Cost
0
Promoting Interoperability

Reporting: Individual

Hospital and facility affiliations

Facilities where Narindar Singh, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Chest And Critical Care Consultants A Medical Group
Tustin, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) - CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Narindar Singh, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$352

Largest payer

Boehringer Ingelheim Pharmaceuticals, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context - California MBC 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Narindar Singh, M.D.. To verify Narindar Singh, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

Narindar Singh, M.D. - brand share 57.0%
Critical Care Medicine (Internal Medicine) Physician average

57% brand-name claims vs 43% generic, on 642 2024 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2024.

642
Total Claims
$803K
Total Drug Cost
102
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
920.433
Total Day Supply
26,152
Brand vs Generic
57% brand / 43% generic
Brand Drug Cost
$741K
Generic Drug Cost
$61K
Antibiotic Claims
17

Patient Demographics

Average Patient Age
76.1 years
Avg HCC Risk Score
1.70
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Narindar Singh, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
82
Breo Ellipta
Fluticasone/Vilanterol
49
Ofev
Nintedanib Esylate
44
Albuterol Sulfate Hfa
Albuterol Sulfate
40
Breyna
Budesonide/Formoterol Fumarate
32
Breztri Aerosphere
Budesonide/Glycopyr/Formoterol
31
Symbicort
Budesonide/Formoterol Fumarate
28
Eliquis
Apixaban
26
Lovastatin
 20
Wixela Inhub
Fluticasone Propion/Salmeterol
19

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

More Critical Care Medicine (Internal Medicine) Physician in CA → All providers in California → Compare specialties →

Critical Care Medicine (Internal Medicine) Physician Overview

How Narindar Singh, M.D. fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,916
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,103
Avg Claims per Provider

Narindar Singh, M.D.'s 642 claims are below the specialty average of 1,103.

Nationwide Critical Care Medicine (Internal Medicine) Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Singh, both outside California so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (17.3 here).

Dayaker Gagadam 17.4 TX Mohammad Farra 16.8 MI Robert Bloom 18 VA Barton Schneyer 16.7 NC

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Rick Waldo Plano, TX John Cantor Grand Rapids, MI Michael Polsky North Chesterfield, VA Ninotchka Sigua Indianapolis, IN

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Singh.

One of 714 Critical Care Medicine (Internal Medicine) Physician providers enrolled in California, 5 are shown here.

Dr. Loui Abdelghani
M.D
Stockton, CA
Dr. Moustapha Abidali
DO
Glendora, CA
Dr. Mohammed Abo Khamis
M.D.
Modesto, CA
Dr. Henry Abrons
M.D.
Berkeley, CA
Dr. Noman Absar
MD
Vallejo, CA

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Narindar Singh, M.D.'s specialty? ▼
Narindar Singh, M.D. specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Santa Ana, California. Credentials: M.D..
How much does Narindar Singh, M.D. prescribe under Medicare Part D? ▼
In 2024, Narindar Singh, M.D. wrote 642 Medicare Part D claims totaling $803K in drug costs for 102 beneficiaries.
What is Narindar Singh, M.D.'s Medicare quality score? ▼
Narindar Singh, M.D. has a CMS MIPS Final Score of 17.3/100 (Quality: 0, Cost: 57.8). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Narindar Singh, M.D. located? ▼
Narindar Singh, M.D. is located at 999 N TUSTIN AVE STE 1, Santa Ana, CA, 92705. Phone: (714) 836-6800.
What is Narindar Singh, M.D.'s NPI number? ▼
Narindar Singh, M.D.'s National Provider Identifier (NPI) is 1992805683, issued on 09/23/2006.
Does Narindar Singh, M.D. prescribe more brand-name or generic drugs? ▼
Narindar Singh, M.D.'s prescribing is 57% brand-name and 43% generic drugs by claim count, with $741K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 6,916 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,103 Medicare Part D claims per year.
What drugs does Narindar Singh, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Narindar Singh, M.D.'s most frequently prescribed drugs include Trelegy Ellipta, Breo Ellipta, Ofev. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Narindar Singh, M.D. accept Medicare? ▼
Narindar Singh, M.D. appears in CMS Medicare data with 642 Part D claims and 102 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Narindar Singh, M.D.'s credentials? ▼
Narindar Singh, M.D.'s NPI is 1992805683 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

View source datasets and methodology notes
Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.