2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1447771688 MD
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ANNE BARNETT, MD

Endocrinology, Diabetes & Metabolism Physician in STOCKTON, 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
291
Medicare Part D claims · 68 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
44%
generic claims · 56% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.5085/100
▲ 13 pts above national avg 83.1 · [object Object]
What the federal data reveals: ANNE BARNETT, MD is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in STOCKTON, California with a Medicare Part D prescribing footprint of 291 claims across 68 beneficiaries — 56% brand-name prescribing . Their CMS MIPS Final Score of 96.5085/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: ANNE BARNETT, MD reported a CMS MIPS final score of 96.5085 out of 100, above the 83.1 national average, and filed 291 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

ANNE BARNETT, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

ANNE BARNETT, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/28/2017

NPI 1447771688

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

291 89% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

MIPS final score

96.5085/100 13.408500000000004% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among California providers

California providers

Endocrinology, Diabetes & Metabolism Physician share within California

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within California

Medicare quality performance — MIPS

ANNE BARNETT, MD's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average

High performer (top quartile)
MIPS Final Score
96.5085/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 96.5085/100 vs national avg 83.1

0%100%National avg83%96.5%
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 96.5085/100 vs national avg 83.1

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).

ANNE BARNETT, MD is a Endocrinology, Diabetes & Metabolism Physician provider practicing in STOCKTON, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1447771688. 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.

ANNE BARNETT, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 782 E HARDING WAY, STOCKTON, CA, 95204, with a listed phone of (209) 546-5200. NPI 1447771688 was issued on 06/28/2017. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BARNETT 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 291 prescription claims written by this provider, covering 68 Medicare beneficiaries and totaling roughly $122K in drug spend, split 56% brand-name and 44% generic by claim count. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 96.5085/100 for the 2023 performance year (Quality 80.342), compared with the national average of 83.1.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

782 E HARDING WAY
STOCKTON, CA 95204

Provider Details

NPI 1447771688
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Female
NPI Issued 06/28/2017

CMS Quality Score (MIPS)

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

96.5085
Final Score
Avg: 83.1
80.342
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where ANNE BARNETT, 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.

DIGNITY HEALTH MEDICAL FOUNDATION
STOCKTON, 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 ANNE BARNETT, MD. To verify ANNE BARNETT, 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

ANNE BARNETT, MD — brand share 56.0%
Specialty average (est.)

56% brand-name claims vs 44% generic, on 291 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.

291
Total Claims
$122K
Total Drug Cost
68
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
530
Total Day Supply
15,359
Brand vs Generic
56% brand / 44% generic
Brand Drug Cost
$119K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
66.6 years
Avg HCC Risk Score
2.31
Gender Split
63% female / 37% male
Age Distribution
<65: 19, 65-74: 34, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levothyroxine Sodium
42
Ozempic
Semaglutide
21
Jardiance
Empagliflozin
15
Humalog Kwikpen U-100
Insulin Lispro
13
Atorvastatin Calcium
11
Toujeo Solostar
"Insulin Glargine
N/A

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

Endocrinology, Diabetes & Metabolism Physician Overview

How ANNE BARNETT, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

ANNE BARNETT, MD's 291 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in California

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANNE BARNETT, MD's specialty?
ANNE BARNETT, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in STOCKTON, California. Credentials: MD.
How much does ANNE BARNETT, MD prescribe under Medicare Part D?
In 2023, ANNE BARNETT, MD wrote 291 Medicare Part D claims totaling $122K in drug costs for 68 beneficiaries.
What is ANNE BARNETT, MD's Medicare quality score?
ANNE BARNETT, MD has a CMS MIPS Final Score of 96.5085/100 (Quality: 80.342). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is ANNE BARNETT, MD located?
ANNE BARNETT, MD is located at 782 E HARDING WAY, STOCKTON, CA, 95204. Phone: (209) 546-5200.
What is ANNE BARNETT, MD's NPI number?
ANNE BARNETT, MD's National Provider Identifier (NPI) is 1447771688, issued on 06/28/2017.
Does ANNE BARNETT, MD prescribe more brand-name or generic drugs?
ANNE BARNETT, MD's prescribing is 56% brand-name and 44% generic drugs by claim count, with $119K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does ANNE BARNETT, MD prescribe most often?
Based on 2023 Medicare Part D data, ANNE BARNETT, MD's most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Jardiance. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANNE BARNETT, MD accept Medicare?
ANNE BARNETT, MD appears in CMS Medicare data with 291 Part D claims and 68 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANNE BARNETT, MD's credentials?
ANNE BARNETT, MD's NPI is 1447771688 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.
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