2026 NPPES data Hospitalist Physician NPI 1992879209 MD
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SUNITHA ANNAMANENI, MD

Hospitalist Physician in WALNUT CREEK, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
453
Medicare Part D claims · 173 beneficiaries · Hospitalist Physician avg: 888
What the federal data reveals: SUNITHA ANNAMANENI, MD is a Hospitalist Physician ([object Object]) practicing in WALNUT CREEK, California with a Medicare Part D prescribing footprint of 453 claims across 173 beneficiaries .

What stands out: SUNITHA ANNAMANENI, MD filed 453 Medicare Part D claims in 2023 across WALNUT CREEK, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

SUNITHA ANNAMANENI, MD 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).

SUNITHA ANNAMANENI, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 11/20/2006

NPI 1992879209

Primary specialty

Hospitalist Physician

Mid-sized

16,825 US NPIs in this specialty

Medicare Part D claims

453 49% vs specialty avg

2023 prescription claims

Specialty avg: 888

Specialty distribution in California

How Hospitalist Physician compares to other specialties among California providers

California providers

Hospitalist Physician share within California

1. Hospitalist Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hospitalist Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Hospitalist Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hospitalist Physician ABMS/AOA estimate

Est. board-certified rate (Hospitalist Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hospitalist Physician) — ABMS / AOA estimate

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).

SUNITHA ANNAMANENI, MD is a Hospitalist Physician provider practicing in WALNUT CREEK, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1992879209. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

SUNITHA ANNAMANENI, MD appears in the CMS NPPES registry as a Hospitalist Physician provider holding MD credentials at 1425 S MAIN ST, WALNUT CREEK, CA, 94596, with a listed phone of (925) 295-4000. NPI 1992879209 was issued on 11/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANNAMANENI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 453 prescription claims written by this provider, covering 173 Medicare beneficiaries and totaling roughly $27K in drug spend, with an opioid prescribing rate of 3.5%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Hospitalist Physician is a mid-sized specialty nationwide, with 16,825 enrolled providers across 54 states and an average of 888 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

1425 S MAIN ST
WALNUT CREEK, CA 94596

Provider Details

NPI 1992879209
Specialty Hospitalist Physician
Credentials MD
Gender Female
NPI Issued 11/20/2006

Hospital and facility affiliations

Facilities where SUNITHA ANNAMANENI, 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.

PERMANENTE MEDICAL GROUP INC
ANTIOCH, 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).

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 SUNITHA ANNAMANENI, MD. To verify SUNITHA ANNAMANENI, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

453
Total Claims
$27K
Total Drug Cost
173
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
816
Total Day Supply
21,699
Generic Drug Cost
$7K
Opioid Claims
16 (3.5% rate)
Antibiotic Claims
60

Patient Demographics

Average Patient Age
79.6 years
Avg HCC Risk Score
2.52
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Amlodipine Besylate
33
Furosemide
26
Atorvastatin Calcium
20
Cefpodoxime Proxetil
19
Losartan Potassium
15
Gabapentin
13
Lisinopril-Hydrochlorothiazide
Lisinopril/Hydrochlorothiazide
12
Lisinopril
11

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

Hospitalist Physician Overview

How SUNITHA ANNAMANENI, MD fits within the Hospitalist Physician landscape nationally.

16,825
Hospitalist Physician Providers in US
54
States with Hospitalist Physician
888
Avg Claims per Provider

SUNITHA ANNAMANENI, MD's 453 claims are below the specialty average of 888.

Nearby Hospitalist Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as ANNAMANENI.

Compare Hospitalist Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SUNITHA ANNAMANENI, MD's specialty?
SUNITHA ANNAMANENI, MD specializes in Hospitalist Physician and practices in WALNUT CREEK, California. Credentials: MD.
How much does SUNITHA ANNAMANENI, MD prescribe under Medicare Part D?
In 2023, SUNITHA ANNAMANENI, MD wrote 453 Medicare Part D claims totaling $27K in drug costs for 173 beneficiaries.
Where is SUNITHA ANNAMANENI, MD located?
SUNITHA ANNAMANENI, MD is located at 1425 S MAIN ST, WALNUT CREEK, CA, 94596. Phone: (925) 295-4000.
What is SUNITHA ANNAMANENI, MD's NPI number?
SUNITHA ANNAMANENI, MD's National Provider Identifier (NPI) is 1992879209, issued on 11/20/2006.
Does SUNITHA ANNAMANENI, MD prescribe opioids?
Yes, SUNITHA ANNAMANENI, MD had 16 opioid claims in 2023 with an opioid prescribing rate of 3.5%.
How many Hospitalist Physician providers are there in the US?
There are 16,825 Hospitalist Physician providers across 54 states in the US. The average Hospitalist Physician provider writes 888 Medicare Part D claims per year.
What drugs does SUNITHA ANNAMANENI, MD prescribe most often?
Based on 2023 Medicare Part D data, SUNITHA ANNAMANENI, MD's most frequently prescribed drugs include Amlodipine Besylate, Furosemide, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SUNITHA ANNAMANENI, MD accept Medicare?
SUNITHA ANNAMANENI, MD appears in CMS Medicare data with 453 Part D claims and 173 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SUNITHA ANNAMANENI, MD's credentials?
SUNITHA ANNAMANENI, MD's NPI is 1992879209 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

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