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2026 NPPES data Sleep Medicine (Internal Medicine) Physician NPI 1639163744 M.D.,
Verify on CMS →

Said Mostafavi, M.D.,

Sleep Medicine (Internal Medicine) Physician in Los Angeles, 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 932 in Sleep 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
363
Medicare Part D claims · 65 beneficiaries · Sleep Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
63%
generic claims · 37% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
12.9/100
▼ 71 pts below national avg 83.5 · Penalty band
Industry payments
$1.7K
33 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

Said Mostafavi, M.D., reported a CMS MIPS final score of 12.9/100 - below the 83.5 national average - and filed 363 Medicare Part D claims in 2024.

12.9/100
MIPS score · -71 vs avg
363
Part D claims, 2024
63%
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 Said Mostafavi, 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 1639163744), first enumerated 09/02/2005.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 363 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 12.9/100 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

    Industry payment transparency

    $1.7K in reported industry payments (33 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 Said Mostafavi, 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 1639163744 · Sleep Medicine (Internal Medicine) Physician

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

  • NPI-10 1639163744
  • ENUM-LEGACY 2005
  • TAX-NARROW 932
  • MIPS-LOW 12.9/100
  • RX-LIGHT 363
  • BOOK-THIN 102 in California
  • PHOTO-FINISH James Kim, M.D. · ±0.6

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

Said Mostafavi, 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.

13 ≥ 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 Said Mostafavi, M.D., sits

This provider among sleep medicine (internal medicine) physician peers

Across the 274 sleep medicine (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Said Mostafavi, M.D., writes more Part D claims than 42% of them and scores higher on MIPS quality than 1% - 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 quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 100Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 98Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 52Said Mostafavi, M.D.,, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 1
Part D claim volume vs MIPS quality, by specialty percentile

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

✓
Board certification likely (heuristic, not verified)

Said Mostafavi, M.D., practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Said Mostafavi, M.D.,?

Below national average

NPI registry status

Active

Issued 09/02/2005

NPI 1639163744

Primary specialty

Sleep Medicine (Internal Medicine) Physician

Niche

932 US NPIs in this specialty

Medicare Part D claims

363 72% vs specialty avg

2024 prescription claims

Specialty avg: 1,288

MIPS final score

12.9/100 70.6 pts vs avg

Penalty band band

vs 83.5 national avg

Specialty distribution in California

How Sleep 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%Sleep Medicine (Internal Med…0%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Said Mostafavi, M.D.,'s 2023 MIPS final score plotted against the Sleep Medicine (Internal Medicine) Physician national average

Below national average
MIPS Final Score
12.9/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%12.9%
MIPS final score (Sleep Medicine (Internal Medicine) Physician) - 12.9/100 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

2080 CENTURY PARK EAST
Los Angeles, CA 90067
(310) 551-1881

Provider Details

NPI 1639163744
Specialty Sleep Medicine (Internal Medicine) Physician
Credentials M.D.,
Gender Male
NPI Issued 09/02/2005

CMS Quality Score (MIPS)

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

12.9144
Final Score
Measured-score avg: 83.5
0
Quality
43.048
Cost

Reporting: Individual

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 Said Mostafavi, M.D.,. Source: openpaymentsdata.cms.gov.

Total received

$1.7K

Largest payer

W. L. Gore & Associates, 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 Said Mostafavi, M.D.,. To verify Said Mostafavi, 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 · Above average

Said Mostafavi, M.D., - brand share 37.0%
Sleep Medicine (Internal Medicine) Physician average

37% brand-name claims vs 63% generic, on 363 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.

363
Total Claims
$60K
Total Drug Cost
65
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
455.7
Total Day Supply
12,569
Brand vs Generic
37% brand / 63% generic
Brand Drug Cost
$57K
Generic Drug Cost
$3K
Antibiotic Claims
38

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.61
Gender Split
49% female / 51% male

Top Prescribed Drugs (Medicare Part D)

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

What Said Mostafavi, 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
Combivent Respimat
Ipratropium/Albuterol Sulfate
33
Gabapentin
 29
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
29
Albuterol Sulfate Hfa
Albuterol Sulfate
28
Azithromycin
 19
Montelukast Sodium
 19
Metformin Hcl
 17
Lansoprazole
 15
Famotidine
 14
Breo Ellipta
Fluticasone/Vilanterol
12

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

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

Sleep Medicine (Internal Medicine) Physician Overview

How Said Mostafavi, M.D., fits within the Sleep Medicine (Internal Medicine) Physician landscape nationally.

932
Sleep Medicine (Internal Medicine) Physician Providers in US
52
States with Sleep Medicine (Internal Medicine) Physician
1,288
Avg Claims per Provider

Said Mostafavi, M.D.,'s 363 claims are below the specialty average of 1,288.

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

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

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (12.9 here).

James Kim 13.5 PA Andrew Jamieson 15.7 TX Avie Grunspan 10 TX Sajjad Shah 16 PA

Same NPPES enumeration year (2005)

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

David Luterman Dallas, TX Behnam Goudarzi Woodbridge, VA Lo'Ay Al-Asadi Charleston, WV Armand Bermudez Hialeah, FL

Nearby Sleep 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 Mostafavi.

One of 102 Sleep Medicine (Internal Medicine) Physician providers enrolled in California, 5 are shown here.

Dr. Jennifer Acostamadiedo
MD
Santa Cruz, CA
Dr. Fatima Ajaz
M.D
Orange, CA
Kathreen Al Ramo
Fresno, CA
Dr. Jacqueline Angles
D.O.
Madera, CA
Dr. Amir Arfaei
MD
Ventura, CA

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

Frequently Asked Questions

What is Said Mostafavi, M.D.,'s specialty? ▼
Said Mostafavi, M.D., specializes in Sleep Medicine (Internal Medicine) Physician and practices in Los Angeles, California. Credentials: M.D.,.
How much does Said Mostafavi, M.D., prescribe under Medicare Part D? ▼
In 2024, Said Mostafavi, M.D., wrote 363 Medicare Part D claims totaling $60K in drug costs for 65 beneficiaries.
What is Said Mostafavi, M.D.,'s Medicare quality score? ▼
Said Mostafavi, M.D., has a CMS MIPS Final Score of 12.9/100 (Quality: 0, Cost: 43). 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 Said Mostafavi, M.D., located? ▼
Said Mostafavi, M.D., is located at 2080 CENTURY PARK EAST, Los Angeles, CA, 90067. Phone: (310) 551-1881.
What is Said Mostafavi, M.D.,'s NPI number? ▼
Said Mostafavi, M.D.,'s National Provider Identifier (NPI) is 1639163744, issued on 09/02/2005.
Does Said Mostafavi, M.D., prescribe more brand-name or generic drugs? ▼
Said Mostafavi, M.D.,'s prescribing is 37% brand-name and 63% generic drugs by claim count, with $57K in brand drug costs.
How many Sleep Medicine (Internal Medicine) Physician providers are there in the US? ▼
There are 932 Sleep Medicine (Internal Medicine) Physician providers across 52 states in the US. The average Sleep Medicine (Internal Medicine) Physician provider writes 1,288 Medicare Part D claims per year.
What drugs does Said Mostafavi, M.D., prescribe most often? ▼
Based on 2024 Medicare Part D data, Said Mostafavi, M.D.,'s most frequently prescribed drugs include Combivent Respimat, Gabapentin, Trelegy Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Said Mostafavi, M.D., accept Medicare? ▼
Said Mostafavi, M.D., appears in CMS Medicare data with 363 Part D claims and 65 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Said Mostafavi, M.D.,'s credentials? ▼
Said Mostafavi, M.D.,'s NPI is 1639163744 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.