2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1679547103 M.D.
Verify on CMS →

MARIUS STAN, M.D.

Endocrinology, Diabetes & Metabolism Physician in ROCHESTER, Minnesota. 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
202
Medicare Part D claims · 66 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
54%
generic claims · 46% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARIUS STAN, M.D. filed 202 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in ROCHESTER, Minnesota, prescribing 54% generic.

202
Part D claims, 2023
54%
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.

MARIUS STAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

202 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

MARIUS STAN, M.D. 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).

What does the federal data show about MARIUS STAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/13/2006

NPI 1679547103

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

202 92% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Minnesota

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

Minnesota providers

Endocrinology, Diabetes & Metabolism Physician share within Minnesota

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

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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).

MARIUS STAN, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider practicing in ROCHESTER, Minnesota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1679547103. 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.

MARIUS STAN, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 200 1ST ST SW, ROCHESTER, MN, 55905, with a listed phone of (507) 284-2511. NPI 1679547103 was issued on 02/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what STAN 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 202 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $6K in drug spend, split 46% brand-name and 54% 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.

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

200 1ST ST SW
ROCHESTER, MN 55905

Provider Details

NPI 1679547103
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D.
Gender Male
NPI Issued 02/13/2006

Hospital and facility affiliations

Facilities where MARIUS STAN, M.D. 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.

MAYO CLINIC
ROCHESTER, MN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Above average

MARIUS STAN, M.D. — brand share 46.0%
Specialty average (est.)

46% brand-name claims vs 54% generic, on 202 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.

202
Total Claims
$6K
Total Drug Cost
66
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
496
Total Day Supply
14,786
Brand vs Generic
46% brand / 54% generic
Brand Drug Cost
$3K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
70.7 years
Avg HCC Risk Score
1.46
Gender Split
64% female / 36% 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
Levothyroxine Sodium
141
Methimazole
22

* 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 MARIUS STAN, M.D. 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

MARIUS STAN, M.D.'s 202 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Minnesota

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

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

Frequently Asked Questions

What is MARIUS STAN, M.D.'s specialty?
MARIUS STAN, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in ROCHESTER, Minnesota. Credentials: M.D..
How much does MARIUS STAN, M.D. prescribe under Medicare Part D?
In 2023, MARIUS STAN, M.D. wrote 202 Medicare Part D claims totaling $6K in drug costs for 66 beneficiaries.
Where is MARIUS STAN, M.D. located?
MARIUS STAN, M.D. is located at 200 1ST ST SW, ROCHESTER, MN, 55905. Phone: (507) 284-2511.
What is MARIUS STAN, M.D.'s NPI number?
MARIUS STAN, M.D.'s National Provider Identifier (NPI) is 1679547103, issued on 02/13/2006.
Does MARIUS STAN, M.D. prescribe more brand-name or generic drugs?
MARIUS STAN, M.D.'s prescribing is 46% brand-name and 54% generic drugs by claim count, with $3K 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 MARIUS STAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MARIUS STAN, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Methimazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIUS STAN, M.D. accept Medicare?
MARIUS STAN, M.D. appears in CMS Medicare data with 202 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIUS STAN, M.D.'s credentials?
MARIUS STAN, M.D.'s NPI is 1679547103 with credentials M.D.. 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