2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1033261144 M.D., M.P.H
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MARTHA GONZALEZ, M.D., M.P.H

Endocrinology, Diabetes & Metabolism Physician in VENTURA, 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
4K
Medicare Part D claims · 473 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
68%
generic claims · 32% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
10.1659/100
▼ 73 pts below national avg 83.1 · [object Object]
Industry payments
$187.72
8 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

MARTHA GONZALEZ, M.D., M.P.H reported a CMS MIPS final score of 10.1659/100 — below the 83.1 national average — and filed 3,577 Medicare Part D claims in 2023.

10.1659/100
MIPS score · -73 vs avg
4K
Part D claims, 2023
68%
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.

MARTHA GONZALEZ, M.D., M.P.H's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

10 2nd percentile higher than 2% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). This entry sits in this band. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

Board certification likely (heuristic — not verified)

MARTHA GONZALEZ, M.D., M.P.H practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 MARTHA GONZALEZ, M.D., M.P.H?

Below national average

NPI registry status

Active

Issued 01/17/2007

NPI 1033261144

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

3,577 36% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

MIPS final score

10.1659/100 72.9341% pts

Penalty band 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

MARTHA GONZALEZ, M.D., M.P.H's 2023 MIPS final score plotted against the Endocrinology, Diabetes & Metabolism Physician national average

Below national average
MIPS Final Score
10.1659/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 10.1659/100 vs national avg 83.1

0%100%National avg83%10.2%
MIPS final score (Endocrinology, Diabetes & Metabolism Physician) — 10.1659/100 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).

MARTHA GONZALEZ, M.D., M.P.H appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D., M.P.H credentials at 116 N. BRENT STREET, VENTURA, CA, 93003, with a listed phone of (805) 656-4311. NPI 1033261144 was issued on 01/17/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GONZALEZ 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 3,577 prescription claims written by this provider, covering 473 Medicare beneficiaries and totaling roughly $362K in drug spend, split 32% brand-name and 68% generic by claim count, with an opioid prescribing rate of 0.4%. 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 10.1659/100 for the 2023 performance year (Quality 0, Cost 33.8865), 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

116 N. BRENT STREET
VENTURA, CA 93003

Provider Details

NPI 1033261144
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D., M.P.H
Gender Female
NPI Issued 01/17/2007

CMS Quality Score (MIPS)

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

10.1659
Final Score
Avg: 83.1
0
Quality
33.8865
Cost

Reporting: Individual

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 MARTHA GONZALEZ, M.D., M.P.H. Source: openpaymentsdata.cms.gov.

Total received

$188

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 MARTHA GONZALEZ, M.D., M.P.H. To verify MARTHA GONZALEZ, M.D., M.P.H'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 · Above average

MARTHA GONZALEZ, M.D., M.P.H — brand share 32.0%
Specialty average (est.)

32% brand-name claims vs 68% generic, on 3,577 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.

3,577
Total Claims
$362K
Total Drug Cost
473
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,096
Total Day Supply
271,996
Brand vs Generic
32% brand / 68% generic
Brand Drug Cost
$213K
Generic Drug Cost
$129K
Opioid Claims
13 (0.4% rate)

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
0.72
Gender Split
96% female / 4% male

Top Prescribed Drugs (Medicare Part D)

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

What MARTHA GONZALEZ, M.D., M.P.H prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
727
Synthroid
Levothyroxine Sodium
410
Estradiol (Twice Weekly)
Estradiol
326
Liothyronine Sodium
247
Estradiol
192
Dotti
Estradiol
149
Metformin Hcl Er
Metformin Hcl
73
Alprazolam
60
Levoxyl
Levothyroxine Sodium
54
Estradiol (Once Weekly)
Estradiol
47

* 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 MARTHA GONZALEZ, M.D., M.P.H 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

MARTHA GONZALEZ, M.D., M.P.H's 3,577 claims are above 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 GONZALEZ.

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

Frequently Asked Questions

What is MARTHA GONZALEZ, M.D., M.P.H's specialty?
MARTHA GONZALEZ, M.D., M.P.H specializes in Endocrinology, Diabetes & Metabolism Physician and practices in VENTURA, California. Credentials: M.D., M.P.H.
How much does MARTHA GONZALEZ, M.D., M.P.H prescribe under Medicare Part D?
In 2023, MARTHA GONZALEZ, M.D., M.P.H wrote 3,577 Medicare Part D claims totaling $362K in drug costs for 473 beneficiaries.
What is MARTHA GONZALEZ, M.D., M.P.H's Medicare quality score?
MARTHA GONZALEZ, M.D., M.P.H has a CMS MIPS Final Score of 10.1659/100 (Quality: 0, Cost: 33.8865). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARTHA GONZALEZ, M.D., M.P.H located?
MARTHA GONZALEZ, M.D., M.P.H is located at 116 N. BRENT STREET, VENTURA, CA, 93003. Phone: (805) 656-4311.
What is MARTHA GONZALEZ, M.D., M.P.H's NPI number?
MARTHA GONZALEZ, M.D., M.P.H's National Provider Identifier (NPI) is 1033261144, issued on 01/17/2007.
Does MARTHA GONZALEZ, M.D., M.P.H prescribe more brand-name or generic drugs?
MARTHA GONZALEZ, M.D., M.P.H's prescribing is 32% brand-name and 68% generic drugs by claim count, with $213K in brand drug costs.
Does MARTHA GONZALEZ, M.D., M.P.H prescribe opioids?
Yes, MARTHA GONZALEZ, M.D., M.P.H had 13 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
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 MARTHA GONZALEZ, M.D., M.P.H prescribe most often?
Based on 2023 Medicare Part D data, MARTHA GONZALEZ, M.D., M.P.H's most frequently prescribed drugs include Levothyroxine Sodium, Synthroid, Estradiol (Twice Weekly). This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARTHA GONZALEZ, M.D., M.P.H accept Medicare?
MARTHA GONZALEZ, M.D., M.P.H appears in CMS Medicare data with 3,577 Part D claims and 473 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARTHA GONZALEZ, M.D., M.P.H's credentials?
MARTHA GONZALEZ, M.D., M.P.H's NPI is 1033261144 with credentials M.D., M.P.H. 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