2026 NPPES data Obstetrics & Gynecology Physician NPI 1912908955 MD
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TRICIA MARKUSEN, MD

Obstetrics & Gynecology Physician in MONTEREY, 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
1K
Medicare Part D claims · 293 beneficiaries · Obstetrics & Gynecology Physician avg: 179
MIPS score
92.8048/100
▲ 10 pts above national avg 83.1 · [object Object]
Industry payments
$364.94
21 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

TRICIA MARKUSEN, MD reported a CMS MIPS final score of 92.8048/100 — above the 83.1 national average — and filed 1,115 Medicare Part D claims in 2023.

92.8048/100
MIPS score · +10 vs avg
1K
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.

TRICIA MARKUSEN, MD's MIPS score vs every scored U.S. clinician

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

93 Top 32% higher than 68% 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%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. 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)

TRICIA MARKUSEN, 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 TRICIA MARKUSEN, MD?

High performer (top quartile)

NPI registry status

Active

Issued 08/01/2005

NPI 1912908955

Primary specialty

Obstetrics & Gynecology Physician

Mid-sized

44,313 US NPIs in this specialty

Medicare Part D claims

1,115 523% vs specialty avg

2023 prescription claims

Specialty avg: 179

MIPS final score

92.8048/100 9.704800000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Obstetrics & Gynecology Physician compares to other specialties among California providers

California providers

Obstetrics & Gynecology Physician share within California

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

Medicare quality performance — MIPS

TRICIA MARKUSEN, MD's 2023 MIPS final score plotted against the Obstetrics & Gynecology Physician national average

High performer (top quartile)
MIPS Final Score
92.8048/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Obstetrics & Gynecology Physician) — 92.8048/100 vs national avg 83.1

0%100%National avg83%92.8%
MIPS final score (Obstetrics & Gynecology Physician) — 92.8048/100 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).

TRICIA MARKUSEN, MD appears in the CMS NPPES registry as a Obstetrics & Gynecology Physician provider holding MD credentials at 889 PACIFIC ST, MONTEREY, CA, 93940, with a listed phone of (831) 649-0175. NPI 1912908955 was issued on 08/01/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MARKUSEN 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 1,115 prescription claims written by this provider, covering 293 Medicare beneficiaries and totaling roughly $135K in drug spend. 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 92.8048/100 for the 2023 performance year (Quality 91.9865, Cost 84.0294), compared with the national average of 83.1.

Obstetrics & Gynecology Physician is a mid-sized specialty nationwide, with 44,313 enrolled providers across 56 states and an average of 179 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

889 PACIFIC ST
MONTEREY, CA 93940

Provider Details

NPI 1912908955
Specialty Obstetrics & Gynecology Physician
Credentials MD
Gender Female
NPI Issued 08/01/2005

CMS Quality Score (MIPS)

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

92.8048
Final Score
Avg: 83.1
91.9865
Quality
84.0294
Cost
100
Promoting Interoperability

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 TRICIA MARKUSEN, MD. Source: openpaymentsdata.cms.gov.

Total received

$365

Largest payer

Astellas Pharma US 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 TRICIA MARKUSEN, MD. To verify TRICIA MARKUSEN, 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.

1,115
Total Claims
$135K
Total Drug Cost
293
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,367
Total Day Supply
66,199
Generic Drug Cost
$47K
Antibiotic Claims
71

Patient Demographics

Average Patient Age
75.3 years
Avg HCC Risk Score
0.82
Gender Split
100% female / 0% male

Top Prescribed Drugs (Medicare Part D)

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

What TRICIA MARKUSEN, 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
Estradiol
189
Alendronate Sodium
69
Clotrimazole-Betamethasone
Clotrimazole/Betamethasone Dip
59
Valacyclovir
Valacyclovir Hcl
53
Estradiol (Once Weekly)
Estradiol
51
Estradiol (Twice Weekly)
Estradiol
50
Fluconazole
31
Nystatin
29
Estring
Estradiol
27
Ibandronate Sodium
27

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

Obstetrics & Gynecology Physician Overview

How TRICIA MARKUSEN, MD fits within the Obstetrics & Gynecology Physician landscape nationally.

44,313
Obstetrics & Gynecology Physician Providers in US
56
States with Obstetrics & Gynecology Physician
179
Avg Claims per Provider

TRICIA MARKUSEN, MD's 1,115 claims are above the specialty average of 179.

Nearby Obstetrics & Gynecology Physician Providers in California

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

Compare Obstetrics & Gynecology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is TRICIA MARKUSEN, MD's specialty?
TRICIA MARKUSEN, MD specializes in Obstetrics & Gynecology Physician and practices in MONTEREY, California. Credentials: MD.
How much does TRICIA MARKUSEN, MD prescribe under Medicare Part D?
In 2023, TRICIA MARKUSEN, MD wrote 1,115 Medicare Part D claims totaling $135K in drug costs for 293 beneficiaries.
What is TRICIA MARKUSEN, MD's Medicare quality score?
TRICIA MARKUSEN, MD has a CMS MIPS Final Score of 92.8048/100 (Quality: 91.9865, Cost: 84.0294). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is TRICIA MARKUSEN, MD located?
TRICIA MARKUSEN, MD is located at 889 PACIFIC ST, MONTEREY, CA, 93940. Phone: (831) 649-0175.
What is TRICIA MARKUSEN, MD's NPI number?
TRICIA MARKUSEN, MD's National Provider Identifier (NPI) is 1912908955, issued on 08/01/2005.
How many Obstetrics & Gynecology Physician providers are there in the US?
There are 44,313 Obstetrics & Gynecology Physician providers across 56 states in the US. The average Obstetrics & Gynecology Physician provider writes 179 Medicare Part D claims per year.
What drugs does TRICIA MARKUSEN, MD prescribe most often?
Based on 2023 Medicare Part D data, TRICIA MARKUSEN, MD's most frequently prescribed drugs include Estradiol, Alendronate Sodium, Clotrimazole-Betamethasone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does TRICIA MARKUSEN, MD accept Medicare?
TRICIA MARKUSEN, MD appears in CMS Medicare data with 1,115 Part D claims and 293 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify TRICIA MARKUSEN, MD's credentials?
TRICIA MARKUSEN, MD's NPI is 1912908955 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