NPI registry status
Active
2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1003801358 MD
Verify on CMS → Ramin Khashayar, MD
Critical Care Medicine (Internal Medicine) Physician in Walnut Creek, 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
2K
Medicare Part D claims · 346 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
48%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
99.9/100
▲ 16 pts above national avg 83.5 · Exceptional
Industry payments
$1.1K
23 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Ramin Khashayar, MD reported a CMS MIPS final score of 99.9/100 - above the 83.5 national average - and filed 2,101 Medicare Part D claims in 2024.
- 99.9/100
- MIPS score · +16 vs avg
- 2K
- 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 Ramin Khashayar, 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 1003801358), first enumerated 09/13/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 2,101 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 99.9/100 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.
- Reported
Hospital affiliations
3 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.1K in reported industry payments (23 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 Ramin Khashayar, MD'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 1003801358 · Critical Care Medicine (Internal Medicine) Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-ELITE · RX-MID · BOOK-LIGHT · PHOTO-FINISH
- NPI-10 1003801358
- ENUM-LEGACY 2005
- TAX-MID 7K Critical Care
- MIPS-ELITE 99.9/100
- RX-MID 2,101
- BOOK-LIGHT 714 in California
- PHOTO-FINISH Nevine Carp · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Khashayar · this…
Khashayar · this provider
99.9 MIPS pts
- Nevine Carp · near
Nevine Carp
99.9 MIPS pts
- Christopher Barb…
Christopher Barber
100 MIPS pts
- Ravi Paul Singh …
Ravi Paul Singh Virdi
100 MIPS pts
- Warren Abel · near
Warren Abel
100 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
Ramin Khashayar, 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.
100 ≥ 91st percentile 91% 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 Ramin Khashayar, MD 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, Ramin Khashayar, MD writes more Part D claims than 82% of them and scores higher on MIPS quality than 92% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one critical care medicine (internal medicine) physician peer from a representative sample of 60; the gold marker is Ramin Khashayar, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Ramin Khashayar, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations - 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 Ramin Khashayar, MD?
High performer (top quartile)Primary specialty
Critical Care Medicine (Internal Medicine) Physician
Medicare Part D claims
2,101 90% vs specialty avg
MIPS final score
99.9/100 16.4 pts vs avg
Specialty distribution in California
How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Ramin Khashayar, MD's 2023 MIPS final score plotted against the Critical Care Medicine (Internal Medicine) Physician national average
- MIPS Final Score
- 99.9/100
- 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 | 1003801358 |
|---|---|
| Specialty | Critical Care Medicine (Internal Medicine) Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/13/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
99.926
Final Score
Measured-score avg: 83.5
100
Quality
75.509
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Ramin Khashayar, 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.
According to CMS billing records, Ramin Khashayar, MD is affiliated with 3 Medicare-billing facilities.
John Muir Physician Network
Berkeley, CA
John Muir Trauma Physicians Billing Service
Walnut Creek, CA
Muir Pulmonary Critical Care
Walnut Creek, 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 Ramin Khashayar, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
Inspire Medical Systems, 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 Ramin Khashayar, MD. To verify Ramin Khashayar, MD'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
Ramin Khashayar, MD - brand share 52.0%
Critical Care Medicine (Internal Medicine) Physician average
52% brand-name claims vs 48% generic, on 2,101 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.
2,101
Total Claims
$766K
Total Drug Cost
346
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,863.8
- Total Day Supply
- 75,765
- Brand vs Generic
- 52% brand / 48% generic
- Brand Drug Cost
- $685K
- Generic Drug Cost
- $80K
- Antibiotic Claims
- 190
Patient Demographics
- Average Patient Age
- 77.7 years
- Avg HCC Risk Score
- 1.75
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 12, 65-74: 118, 75-84: 144, 85+: 72
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ramin Khashayar, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Trelegy Ellipta
Trelegy Ellipta
466 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
305 claims
- Azithromycin 134
Azithromycin
134 claims
- Montelukast Sodium 122
Montelukast Sodium
122 claims
- Prednisone 119
Prednisone
119 claims
- Anoro Ellipta 116
Anoro Ellipta
116 claims
- Pantoprazole Sodium 65
Pantoprazole Sodium
65 claims
- Breztri Aerosphere 61
Breztri Aerosphere
61 claims
| Drug | Claims |
|---|---|
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 466 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 305 |
| Azithromycin | 134 |
| Montelukast Sodium | 122 |
| Prednisone | 119 |
| Anoro Ellipta Umeclidinium Brm/Vilanterol Tr | 116 |
| Pantoprazole Sodium | 65 |
| Breztri Aerosphere Budesonide/Glycopyr/Formoterol | 61 |
| Wixela Inhub Fluticasone Propion/Salmeterol | 52 |
| Breo Ellipta Fluticasone/Vilanterol | 45 |
* 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 Ramin Khashayar, MD 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
Ramin Khashayar, MD's 2,101 claims are above 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 Khashayar, both outside California so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (99.9 here).
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
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 Khashayar.
One of 714 Critical Care Medicine (Internal Medicine) Physician providers enrolled in California, 5 are shown here.
Frequently Asked Questions
What is Ramin Khashayar, MD's specialty? ▼
Ramin Khashayar, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in Walnut Creek, California. Credentials: MD.
How much does Ramin Khashayar, MD prescribe under Medicare Part D? ▼
In 2024, Ramin Khashayar, MD wrote 2,101 Medicare Part D claims totaling $766K in drug costs for 346 beneficiaries.
What is Ramin Khashayar, MD's Medicare quality score? ▼
Ramin Khashayar, MD has a CMS MIPS Final Score of 99.9/100 (Quality: 100, Cost: 75.5). 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 Ramin Khashayar, MD located? ▼
Ramin Khashayar, MD is located at 1399 YGNACIO VALLEY RD, Walnut Creek, CA, 94598. Phone: (925) 939-3050.
What is Ramin Khashayar, MD's NPI number? ▼
Ramin Khashayar, MD's National Provider Identifier (NPI) is 1003801358, issued on 09/13/2005.
Does Ramin Khashayar, MD prescribe more brand-name or generic drugs? ▼
Ramin Khashayar, MD's prescribing is 52% brand-name and 48% generic drugs by claim count, with $685K 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 Ramin Khashayar, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Ramin Khashayar, MD's most frequently prescribed drugs include Trelegy Ellipta, Albuterol Sulfate Hfa, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ramin Khashayar, MD accept Medicare? ▼
Ramin Khashayar, MD appears in CMS Medicare data with 2,101 Part D claims and 346 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ramin Khashayar, MD's credentials? ▼
Ramin Khashayar, MD's NPI is 1003801358 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.