2026 NPPES data Nephrology Physician NPI 1215919402 MD
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STUART SENKFOR, MD

Nephrology Physician in DENVER, Colorado. 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
847
Medicare Part D claims · 177 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$284.98
5 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: STUART SENKFOR, MD is a Nephrology Physician ([object Object]) practicing in DENVER, Colorado with a Medicare Part D prescribing footprint of 847 claims across 177 beneficiaries — 13% brand-name prescribing . Industry payments of $284.98 across 5 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

STUART SENKFOR, MD filed 847 Medicare Part D claims in 2023 as a Nephrology Physician in DENVER, Colorado, prescribing 87% generic.

847
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.

Board certification likely (heuristic — not verified)

STUART SENKFOR, MD 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).

STUART SENKFOR, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 11/15/2005

NPI 1215919402

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

847 42% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in Colorado

How Nephrology Physician compares to other specialties among Colorado providers

Colorado providers

Nephrology Physician share within Colorado

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

Specialty board-certification context

Estimated specialty board-certified rate — Nephrology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Nephrology Physician ABMS/AOA estimate

Est. board-certified rate (Nephrology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nephrology 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).

STUART SENKFOR, MD is a Nephrology Physician provider practicing in DENVER, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1215919402. 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.

STUART SENKFOR, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 919 JASMINE ST, DENVER, CO, 80220, with a listed phone of (303) 991-0993. NPI 1215919402 was issued on 11/15/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SENKFOR 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 847 prescription claims written by this provider, covering 177 Medicare beneficiaries and totaling roughly $109K in drug spend, split 13% brand-name and 87% 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.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

919 JASMINE ST
DENVER, CO 80220

Provider Details

NPI 1215919402
Specialty Nephrology Physician
Credentials MD
Gender Male
NPI Issued 11/15/2005

Hospital and facility affiliations

Facilities where STUART SENKFOR, 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.

DENVER NEPHROLOGISTS PC
DENVER, CO

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

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 STUART SENKFOR, MD. Source: openpaymentsdata.cms.gov.

Total received

$285

Largest payer

Amgen 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.

Brand vs generic prescribing mix · Typical

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

13% brand-name claims vs 87% generic, on 847 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.

847
Total Claims
$109K
Total Drug Cost
177
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,072
Total Day Supply
61,796
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$82K
Generic Drug Cost
$27K

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
3.16
Gender Split
40% female / 60% 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
Calcitriol
92
Amlodipine Besylate
85
Lisinopril
66
Furosemide
63
Potassium Chloride
54
Losartan Potassium
52
Sevelamer Carbonate
48
Hydralazine Hcl
44
Metoprolol Succinate
24
Allopurinol
23

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

Nephrology Physician Overview

How STUART SENKFOR, MD fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

STUART SENKFOR, MD's 847 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Colorado

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

Compare Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STUART SENKFOR, MD's specialty?
STUART SENKFOR, MD specializes in Nephrology Physician and practices in DENVER, Colorado. Credentials: MD.
How much does STUART SENKFOR, MD prescribe under Medicare Part D?
In 2023, STUART SENKFOR, MD wrote 847 Medicare Part D claims totaling $109K in drug costs for 177 beneficiaries.
Where is STUART SENKFOR, MD located?
STUART SENKFOR, MD is located at 919 JASMINE ST, DENVER, CO, 80220. Phone: (303) 991-0993.
What is STUART SENKFOR, MD's NPI number?
STUART SENKFOR, MD's National Provider Identifier (NPI) is 1215919402, issued on 11/15/2005.
Does STUART SENKFOR, MD prescribe more brand-name or generic drugs?
STUART SENKFOR, MD's prescribing is 13% brand-name and 87% generic drugs by claim count, with $82K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does STUART SENKFOR, MD prescribe most often?
Based on 2023 Medicare Part D data, STUART SENKFOR, MD's most frequently prescribed drugs include Calcitriol, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STUART SENKFOR, MD accept Medicare?
STUART SENKFOR, MD appears in CMS Medicare data with 847 Part D claims and 177 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STUART SENKFOR, MD's credentials?
STUART SENKFOR, MD's NPI is 1215919402 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.
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