2026 NPPES data Family Medicine Physician NPI 1043259492 MD
Verify on CMS →

STUART MENAKER, MD

Family Medicine Physician in MOUNTAIN VIEW, 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
2K
Medicare Part D claims · 193 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
75/100
▼ 8 pts below national avg 83.1 · [object Object]

What the federal data shows

STUART MENAKER, MD reported a CMS MIPS final score of 75/100 — below the 83.1 national average — and filed 2,010 Medicare Part D claims in 2023.

75/100
MIPS score · -8 vs avg
2K
Part D claims, 2023
87%
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.

STUART MENAKER, MD's MIPS score vs every scored U.S. clinician

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

75 15th percentile higher than 15% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). This entry sits in this band. 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)

STUART MENAKER, MD 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 STUART MENAKER, MD?

Below national average

NPI registry status

Active

Issued 06/04/2006

NPI 1043259492

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

2,010 41% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

75/100 8.099999999999994% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Family Medicine Physician compares to other specialties among California providers

California providers

Family Medicine Physician share within California

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

Medicare quality performance — MIPS

STUART MENAKER, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average

Below national average
MIPS Final Score
75/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) — 75/100 vs national avg 83.1

0%100%National avg83%75%
MIPS final score (Family Medicine Physician) — 75/100 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).

STUART MENAKER, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA, 94040, with a listed phone of (650) 404-8370. NPI 1043259492 was issued on 06/04/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MENAKER 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 2,010 prescription claims written by this provider, covering 193 Medicare beneficiaries and totaling roughly $251K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 4.9%. 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 75/100 for the 2023 performance year, compared with the national average of 83.1.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040

Provider Details

NPI 1043259492
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 06/04/2006

CMS Quality Score (MIPS)

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

75
Final Score
Avg: 83.1

Reporting: Group practice

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 STUART MENAKER, MD. To verify STUART MENAKER, 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 · Typical

STUART MENAKER, MD — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 2,010 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.

2,010
Total Claims
$251K
Total Drug Cost
193
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,270
Total Day Supply
124,726
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$185K
Generic Drug Cost
$65K
Opioid Claims
98 (4.9% rate)
Antibiotic Claims
33

Patient Demographics

Average Patient Age
71.1 years
Avg HCC Risk Score
1.10
Gender Split
36% female / 64% male

Top Prescribed Drugs (Medicare Part D)

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

What STUART MENAKER, MD 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
Atorvastatin Calcium
213
Amlodipine Besylate
69
Metoprolol Succinate
62
Losartan Potassium
56
Rosuvastatin Calcium
53
Trazodone Hcl
46
Metformin Hcl Er
Metformin Hcl
44
Tamsulosin Hcl
44
Lisinopril
42
Hydrochlorothiazide
41

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

Family Medicine Physician Overview

How STUART MENAKER, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

STUART MENAKER, MD's 2,010 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in California

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

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STUART MENAKER, MD's specialty?
STUART MENAKER, MD specializes in Family Medicine Physician and practices in MOUNTAIN VIEW, California. Credentials: MD.
How much does STUART MENAKER, MD prescribe under Medicare Part D?
In 2023, STUART MENAKER, MD wrote 2,010 Medicare Part D claims totaling $251K in drug costs for 193 beneficiaries.
What is STUART MENAKER, MD's Medicare quality score?
STUART MENAKER, MD has a CMS MIPS Final Score of 75/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STUART MENAKER, MD located?
STUART MENAKER, MD is located at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA, 94040. Phone: (650) 404-8370.
What is STUART MENAKER, MD's NPI number?
STUART MENAKER, MD's National Provider Identifier (NPI) is 1043259492, issued on 06/04/2006.
Does STUART MENAKER, MD prescribe more brand-name or generic drugs?
STUART MENAKER, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $185K in brand drug costs.
Does STUART MENAKER, MD prescribe opioids?
Yes, STUART MENAKER, MD had 98 opioid claims in 2023 with an opioid prescribing rate of 4.9%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does STUART MENAKER, MD prescribe most often?
Based on 2023 Medicare Part D data, STUART MENAKER, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Metoprolol Succinate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STUART MENAKER, MD accept Medicare?
STUART MENAKER, MD appears in CMS Medicare data with 2,010 Part D claims and 193 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STUART MENAKER, MD's credentials?
STUART MENAKER, MD's NPI is 1043259492 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