NPI registry status
Active
2026 NPPES data Gastroenterology Physician NPI 1578564506 M.D.
Verify on CMS → Keith Fiman, M.D.
Gastroenterology Physician in Piedmont, 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 16,601 in Gastroenterology 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 · 414 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.9/100
▼ 3 pts below national avg 83.1 · Above neutral
Industry payments
$1.9K
58 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Keith Fiman, M.D. reported a CMS MIPS final score of 79.9/100 - below the 83.1 national average - and filed 1,263 Medicare Part D claims in 2023.
- 79.9/100
- MIPS score · -3 vs avg
- 1K
- Part D claims, 2023
- 77%
- 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.
Keith Fiman, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
80 30th percentile higher than 30% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Keith Fiman, M.D. sits
This provider among gastroenterology physician peers
Across the 5,957 gastroenterology physician providers who report both Medicare Part D prescribing and a MIPS quality score, Keith Fiman, M.D. writes more Part D claims than 73% of them and scores higher on MIPS quality than 32% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one gastroenterology physician peer from a representative sample of 60; the gold marker is Keith Fiman, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Keith Fiman, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 Keith Fiman, M.D.?
Near national averagePrimary specialty
Gastroenterology Physician
Medicare Part D claims
1,263 52% vs specialty avg
MIPS final score
79.9/100 3.2 pts vs avg
Specialty distribution in California
How Gastroenterology Physician compares to other specialties among California providers
Medicare quality performance, MIPS
Keith Fiman, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average
- MIPS Final Score
- 79.9/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Gastroenterology Physician) - 79.9/100 vs national avg 83.1
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).
Keith Fiman, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 333 HAMPTON RD, Piedmont, CA, 94611, with a listed phone of (713) 305-1074. NPI 1578564506 was issued on 08/01/2005.
Medicare Part D records for calendar year 2023 show 1,263 prescription claims written by this provider, covering 414 Medicare beneficiaries and totaling roughly $657K in drug spend, split 23% brand-name and 77% generic by claim count, with an opioid prescribing rate of 1.0%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.9/100 for the 2023 performance year (Quality 68.6, Cost 64.4), compared with the national average of 83.1.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,601 enrolled providers across 54 states and an average of 833 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1578564506 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/01/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
79.8739
Final Score
Avg: 83.1
68.5511
Quality
64.3618
Cost
100
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Keith Fiman, 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.
Catholic Health Initiatives Colorado
West Jordan, UT
Faculty Physicians And Surgeons OF Llusm
Loma Linda, 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 Keith Fiman, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$1.9K
Largest payer
Takeda Pharmaceuticals U.S.A., 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 Keith Fiman, M.D.. To verify Keith Fiman, 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 · Typical
Keith Fiman, M.D. - brand share 23.0%
Gastroenterology Physician average
23% brand-name claims vs 77% generic, on 1,263 2023 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 2023.
1,263
Total Claims
$657K
Total Drug Cost
414
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,409
- Total Day Supply
- 65,724
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $592K
- Generic Drug Cost
- $64K
- Opioid Claims
- 13 (1.0% rate)
- Antibiotic Claims
- 29
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 53% female / 47% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Keith Fiman, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Omeprazole
Omeprazole
199 claims
- Pantoprazole Sodium
Pantoprazole Sodium
151 claims
- Famotidine
Famotidine
125 claims
- Clenpiq
Clenpiq
122 claims
- Esomeprazole Magne…
Esomeprazole Magnesium
97 claims
- Lansoprazole 42
Lansoprazole
42 claims
- Rabeprazole Sodium 38
Rabeprazole Sodium
38 claims
- Dexlansoprazole Dr 34
Dexlansoprazole Dr
34 claims
| Drug | Claims |
|---|---|
| Omeprazole | 199 |
| Pantoprazole Sodium | 151 |
| Famotidine | 125 |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 122 |
| Esomeprazole Magnesium | 97 |
| Lansoprazole | 42 |
| Rabeprazole Sodium | 38 |
| Dexlansoprazole Dr Dexlansoprazole | 34 |
| Sucralfate | 26 |
| Mesalamine | 22 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Keith Fiman, M.D. fits within the Gastroenterology Physician landscape nationally.
16,601
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider
Keith Fiman, M.D.'s 1,263 claims are above the specialty average of 833.
Nearby Gastroenterology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Fiman.
Dr. David Aarons
MD
Lodi, CA
Dr. Constante Abaya
MD
Oxnard, CA
Dr. Homan Abdollahzadeh
MD
Palm Springs, CA
Dr. John Abdulian
M.D.
Fresno, CA
Dr. Hussein Abidali
DO
Rancho Cucamonga, CA
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Keith Fiman, M.D.'s specialty? ▼
Keith Fiman, M.D. specializes in Gastroenterology Physician and practices in Piedmont, California. Credentials: M.D..
How much does Keith Fiman, M.D. prescribe under Medicare Part D? ▼
In 2023, Keith Fiman, M.D. wrote 1,263 Medicare Part D claims totaling $657K in drug costs for 414 beneficiaries.
What is Keith Fiman, M.D.'s Medicare quality score? ▼
Keith Fiman, M.D. has a CMS MIPS Final Score of 79.9/100 (Quality: 68.6, Cost: 64.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Keith Fiman, M.D. located? ▼
Keith Fiman, M.D. is located at 333 HAMPTON RD, Piedmont, CA, 94611. Phone: (713) 305-1074.
What is Keith Fiman, M.D.'s NPI number? ▼
Keith Fiman, M.D.'s National Provider Identifier (NPI) is 1578564506, issued on 08/01/2005.
Does Keith Fiman, M.D. prescribe more brand-name or generic drugs? ▼
Keith Fiman, M.D.'s prescribing is 23% brand-name and 77% generic drugs by claim count, with $592K in brand drug costs.
Does Keith Fiman, M.D. prescribe opioids? ▼
Yes, Keith Fiman, M.D. had 13 opioid claims in 2023 with an opioid prescribing rate of 1.0%.
How many Gastroenterology Physician providers are there in the US? ▼
There are 16,601 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does Keith Fiman, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Keith Fiman, M.D.'s most frequently prescribed drugs include Omeprazole, Pantoprazole Sodium, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Keith Fiman, M.D. accept Medicare? ▼
Keith Fiman, M.D. appears in CMS Medicare data with 1,263 Part D claims and 414 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Keith Fiman, M.D.'s credentials? ▼
Keith Fiman, M.D.'s NPI is 1578564506 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 (2023). 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 April 2026 (NPPES) / 2023 (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 PlainDoctor editorial team.
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 May 2026.