NPI registry status
Active
2026 NPPES data Pulmonary Disease Physician NPI 1538477658 MD
Verify on CMS → Inderjit Singh, MD
Pulmonary Disease Physician in New Haven, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 9,647 in Pulmonary Disease 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
1K
Medicare Part D claims · 115 beneficiaries · Pulmonary Disease Physician avg: 1K
Generic prescribing
48%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
73.6/100
▼ 10 pts below national avg 83.5 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Inderjit Singh, MD reported a CMS MIPS final score of 73.6/100 - below the 83.5 national average - and filed 1,036 Medicare Part D claims in 2024.
- 73.6/100
- MIPS score · -10 vs avg
- 1K
- Part D claims, 2024
- 48%
- 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 Inderjit Singh, MD
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 1538477658), first enumerated 09/23/2010.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,036 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 73.6/100 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.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1538477658 · Pulmonary Disease Physician
NPI-10 · ENUM-MID · TAX-MID · MIPS-BELOW · RX-MID · BOOK-THIN · PHOTO-FINISH
- NPI-10 1538477658
- ENUM-MID 2010
- TAX-MID 10K Pulmonary Disease
- MIPS-BELOW 73.6/100
- RX-MID 1,036
- BOOK-THIN 162 in Connecticut
- PHOTO-FINISH Cynthia Baffi · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Reinerio Linares…
Reinerio Linares-Mera
73.5 MIPS pts
- Singh · this pro…
Singh · this provider
73.6 MIPS pts
- Nicholas Huynh ·…
Nicholas Huynh
73.6 MIPS pts
- Maor Sauler · near
Maor Sauler
73.6 MIPS pts
- Cynthia Baffi · …
Cynthia Baffi
73.6 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Inderjit Singh, MD'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.
74 ≥ 11th percentile 11% of 454,083 measured providers are in lower value bands
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 Inderjit Singh, MD sits
This provider among pulmonary disease physician peers
Across the 2,467 pulmonary disease physician providers who report both Medicare Part D prescribing and a MIPS quality score, Inderjit Singh, MD writes more Part D claims than 51% of them and scores higher on MIPS quality than 15% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one pulmonary disease physician peer from a representative sample of 60; the gold marker is Inderjit Singh, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Inderjit Singh, MD 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 Inderjit Singh, MD?
Below national averagePrimary specialty
Pulmonary Disease Physician
Medicare Part D claims
1,036 31% vs specialty avg
MIPS final score
73.6/100 9.9 pts vs avg
Specialty distribution in Connecticut
How Pulmonary Disease Physician compares to other specialties among Connecticut providers
Medicare quality performance, MIPS
Inderjit Singh, MD's 2023 MIPS final score plotted against the Pulmonary Disease Physician national average
- MIPS Final Score
- 73.6/100
- vs 83.5 national avg · 2023 performance year
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
Provider Details
| NPI | 1538477658 |
|---|---|
| Specialty | Pulmonary Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/23/2010 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
73.5637
Final Score
Measured-score avg: 83.5
75.8435
Quality
51.4318
Cost
74
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Inderjit Singh, MD 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.
Yale University
New Haven, CT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Brand-heavy
Inderjit Singh, MD - brand share 52.0%
Pulmonary Disease Physician average
52% brand-name claims vs 48% generic, on 1,036 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.
1,036
Total Claims
$7.7M
Total Drug Cost
115
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,278.533
- Total Day Supply
- 37,137
- Brand vs Generic
- 52% brand / 48% generic
- Brand Drug Cost
- $7.1M
- Generic Drug Cost
- $584K
Patient Demographics
- Average Patient Age
- 71.6 years
- Avg HCC Risk Score
- 3.07
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 25, 65-74: 38, 75-84: 40, 85+: 12
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Inderjit Singh, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Sildenafil Citrate
Sildenafil Citrate
140 claims
- Ambrisentan
Ambrisentan
135 claims
- Opsumit
Opsumit
89 claims
- Adempas
Adempas
88 claims
- Tyvaso Dpi
Tyvaso Dpi
87 claims
- Tadalafil
Tadalafil
82 claims
- Orenitram Er
Orenitram Er
58 claims
- Uptravi 53
Uptravi
53 claims
| Drug | Claims |
|---|---|
| Sildenafil Citrate | 140 |
| Ambrisentan | 135 |
| Opsumit Macitentan | 89 |
| Adempas Riociguat | 88 |
| Tyvaso Dpi Treprostinil | 87 |
| Tadalafil | 82 |
| Orenitram Er Treprostinil Diolamine | 58 |
| Uptravi Selexipag | 53 |
| Furosemide | 39 |
| Adcirca Tadalafil | 36 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pulmonary Disease Physician Overview
How Inderjit Singh, MD fits within the Pulmonary Disease Physician landscape nationally.
9,647
Pulmonary Disease Physician Providers in US
53
States with Pulmonary Disease Physician
1,498
Avg Claims per Provider
Inderjit Singh, MD's 1,036 claims are below the specialty average of 1,498.
Nationwide Pulmonary Disease Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Singh, both outside Connecticut so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (73.6 here).
Same NPPES enumeration year (2010)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pulmonary Disease Physician Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Singh.
One of 162 Pulmonary Disease Physician providers enrolled in Connecticut, 5 are shown here.
Dr. Mubdiul Ali
M.D.
New Haven, CT
Dr. Naser Adeeb Aljundi
MD
New London, CT
Dr. Augustine Andoh-Duku
M.D
Danbury, CT
Dr. Mohammed Anwar
MD
Vernon, CT
Dr. Joseph Bahgat
MD
Hartford, CT
Compare Pulmonary Disease Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Inderjit Singh, MD's specialty? ▼
Inderjit Singh, MD specializes in Pulmonary Disease Physician and practices in New Haven, Connecticut. Credentials: MD.
How much does Inderjit Singh, MD prescribe under Medicare Part D? ▼
In 2024, Inderjit Singh, MD wrote 1,036 Medicare Part D claims totaling $7.7M in drug costs for 115 beneficiaries.
What is Inderjit Singh, MD's Medicare quality score? ▼
Inderjit Singh, MD has a CMS MIPS Final Score of 73.6/100 (Quality: 75.8, Cost: 51.4). 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 Inderjit Singh, MD located? ▼
Inderjit Singh, MD is located at 300 CEDAR STREET, New Haven, CT, 06519. Phone: (203) 785-3207.
What is Inderjit Singh, MD's NPI number? ▼
Inderjit Singh, MD's National Provider Identifier (NPI) is 1538477658, issued on 09/23/2010.
Does Inderjit Singh, MD prescribe more brand-name or generic drugs? ▼
Inderjit Singh, MD's prescribing is 52% brand-name and 48% generic drugs by claim count, with $7.1M in brand drug costs.
How many Pulmonary Disease Physician providers are there in the US? ▼
There are 9,647 Pulmonary Disease Physician providers across 53 states in the US. The average Pulmonary Disease Physician provider writes 1,498 Medicare Part D claims per year.
What drugs does Inderjit Singh, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Inderjit Singh, MD's most frequently prescribed drugs include Sildenafil Citrate, Ambrisentan, Opsumit. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Inderjit Singh, MD accept Medicare? ▼
Inderjit Singh, MD appears in CMS Medicare data with 1,036 Part D claims and 115 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Inderjit Singh, MD's credentials? ▼
Inderjit Singh, MD's NPI is 1538477658 with credentials MD. 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
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.