NPI registry status
Active
2026 NPPES data Hepatology Physician NPI 1306817903 M.D., M.H.S.
Verify on CMS → Aruna Jayaraman, M.D., M.H.S.
Hepatology Physician in Santa Rosa, 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 282 in Hepatology 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
802
Medicare Part D claims · 217 beneficiaries · Hepatology Physician avg: 803
Industry payments
$125
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Aruna Jayaraman, M.D., M.H.S. filed 802 Medicare Part D claims in 2023 as a Hepatology Physician in Santa Rosa, California.
- 802
- Part D claims, 2023
- 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.
Aruna Jayaraman, M.D., M.H.S.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
802 Top 27% higher than 73% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Aruna Jayaraman, M.D., M.H.S. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 Aruna Jayaraman, M.D., M.H.S.?
Quality data not reportedPrimary specialty
Hepatology Physician
Medicare Part D claims
802 0% vs specialty avg
Specialty distribution in California
How Hepatology Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Hepatology Physician. Verify directly:
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).
Aruna Jayaraman, M.D., M.H.S. appears in the CMS NPPES registry as a Hepatology Physician provider holding M.D., M.H.S. credentials at 3975 OLD REDWOOD HWY, Santa Rosa, CA, 95403, with a listed phone of (707) 228-8803. NPI 1306817903 was issued on 01/31/2006.
Medicare Part D records for calendar year 2023 show 802 prescription claims written by this provider, covering 217 Medicare beneficiaries and totaling roughly $777K in drug spend.
Hepatology Physician is a narrow specialty nationwide, with 282 enrolled providers across 36 states and an average of 803 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 | 1306817903 |
|---|---|
| Specialty | Hepatology Physician |
| Credentials | M.D., M.H.S. |
| Gender | Female |
| NPI Issued | 01/31/2006 |
Hospital and facility affiliations
Facilities where Aruna Jayaraman, M.D., M.H.S. 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.
Sutter Bay Medical Foundation
Santa Rosa, 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 Aruna Jayaraman, M.D., M.H.S.. Source: openpaymentsdata.cms.gov.
Total received
$125
Largest payer
ABBVIE 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 Aruna Jayaraman, M.D., M.H.S.. To verify Aruna Jayaraman, M.D., M.H.S.'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
802
Total Claims
$777K
Total Drug Cost
217
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,224
- Total Day Supply
- 33,792
- Generic Drug Cost
- $24K
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 72.2 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 80% female / 20% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Aruna Jayaraman, M.D., M.H.S. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
208 claims
- Omeprazole
Omeprazole
158 claims
- Famotidine
Famotidine
84 claims
- Peg 3350-Electrolyte 46
Peg 3350-Electrolyte
46 claims
- Creon 28
Creon
28 claims
- Methotrexate 19
Methotrexate
19 claims
- Dicyclomine Hcl 16
Dicyclomine Hcl
16 claims
- Stelara 16
Stelara
16 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 208 |
| Omeprazole | 158 |
| Famotidine | 84 |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 46 |
| Creon Lipase/Protease/Amylase | 28 |
| Methotrexate Methotrexate Sodium | 19 |
| Dicyclomine Hcl | 16 |
| Stelara Ustekinumab | 16 |
| Budesonide Er Budesonide | 14 |
| Esomeprazole Magnesium | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Hepatology Physician Overview
How Aruna Jayaraman, M.D., M.H.S. fits within the Hepatology Physician landscape nationally.
282
Hepatology Physician Providers in US
36
States with Hepatology Physician
803
Avg Claims per Provider
Aruna Jayaraman, M.D., M.H.S.'s 802 claims are below the specialty average of 803.
Nearby Hepatology Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Jayaraman.
Dr. Ketan Ajudia
M.D.
Placerville, CA
Dr. Maurizio Bonacini
M.D.
San Francisco, CA
Kay Chen
San Diego, CA
Dr. Eddie Cheung
MD
Oakland, CA
Dr. Allen Cooper
M.D.
Stanford, CA
Compare Hepatology 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 Hepatology 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Aruna Jayaraman, M.D., M.H.S.'s specialty? ▼
Aruna Jayaraman, M.D., M.H.S. specializes in Hepatology Physician and practices in Santa Rosa, California. Credentials: M.D., M.H.S..
How much does Aruna Jayaraman, M.D., M.H.S. prescribe under Medicare Part D? ▼
In 2023, Aruna Jayaraman, M.D., M.H.S. wrote 802 Medicare Part D claims totaling $777K in drug costs for 217 beneficiaries.
Where is Aruna Jayaraman, M.D., M.H.S. located? ▼
Aruna Jayaraman, M.D., M.H.S. is located at 3975 OLD REDWOOD HWY, Santa Rosa, CA, 95403. Phone: (707) 228-8803.
What is Aruna Jayaraman, M.D., M.H.S.'s NPI number? ▼
Aruna Jayaraman, M.D., M.H.S.'s National Provider Identifier (NPI) is 1306817903, issued on 01/31/2006.
How many Hepatology Physician providers are there in the US? ▼
There are 282 Hepatology Physician providers across 36 states in the US. The average Hepatology Physician provider writes 803 Medicare Part D claims per year.
What drugs does Aruna Jayaraman, M.D., M.H.S. prescribe most often? ▼
Based on 2023 Medicare Part D data, Aruna Jayaraman, M.D., M.H.S.'s most frequently prescribed drugs include Pantoprazole Sodium, Omeprazole, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Aruna Jayaraman, M.D., M.H.S. accept Medicare? ▼
Aruna Jayaraman, M.D., M.H.S. appears in CMS Medicare data with 802 Part D claims and 217 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Aruna Jayaraman, M.D., M.H.S.'s credentials? ▼
Aruna Jayaraman, M.D., M.H.S.'s NPI is 1306817903 with credentials M.D., M.H.S.. 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.
- 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.