2026 NPPES data Dermatology Physician NPI 1639208937 D.O.
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JEFFREY ENDSLEY, D.O.

Dermatology Physician in MUSKOGEE, Oklahoma. 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
473
Medicare Part D claims · 227 beneficiaries · Dermatology Physician avg: 729
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · [object Object]
What the federal data reveals: JEFFREY ENDSLEY, D.O. is a Dermatology Physician ([object Object]) practicing in MUSKOGEE, Oklahoma with a Medicare Part D prescribing footprint of 473 claims across 227 beneficiaries — 18% brand-name prescribing . Their CMS MIPS Final Score of 0/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What the federal data shows

JEFFREY ENDSLEY, D.O. reported a CMS MIPS final score of 0/100 — below the 83.1 national average — and filed 473 Medicare Part D claims in 2023.

0/100
MIPS score · -83 vs avg
473
Part D claims, 2023
82%
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.

JEFFREY ENDSLEY, D.O.'s MIPS score vs every scored U.S. clinician

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

0 0th percentile higher than 0% of 477,587 scored providers

0–10: 8,684 scored providers (2%). This entry sits in this band. 10–20: 3,008 scored providers (1%). Above this entry. 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)

JEFFREY ENDSLEY, D.O. 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).

JEFFREY ENDSLEY, D.O. at a glance

Below national average

NPI registry status

Active

Issued 03/04/2007

NPI 1639208937

Primary specialty

Dermatology Physician

Mid-sized

14,610 US NPIs in this specialty

Medicare Part D claims

473 35% vs specialty avg

2023 prescription claims

Specialty avg: 729

MIPS final score

0/100 83.1% pts

Penalty band band

vs 83.1 national avg

Specialty distribution in Oklahoma

How Dermatology Physician compares to other specialties among Oklahoma providers

Oklahoma providers

Dermatology Physician share within Oklahoma

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

Medicare quality performance — MIPS

JEFFREY ENDSLEY, D.O.'s 2023 MIPS final score plotted against the Dermatology Physician national average

Below national average
MIPS Final Score
0/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Dermatology Physician) — 0/100 vs national avg 83.1

0%100%National avg83%0%
MIPS final score (Dermatology Physician) — 0/100 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).

JEFFREY ENDSLEY, D.O. is a Dermatology Physician provider practicing in MUSKOGEE, Oklahoma, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1639208937. 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.

JEFFREY ENDSLEY, D.O. appears in the CMS NPPES registry as a Dermatology Physician provider holding D.O. credentials at 1524 W OKMULGEE ST, MUSKOGEE, OK, 74401, with a listed phone of (918) 682-5397. NPI 1639208937 was issued on 03/04/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ENDSLEY 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 473 prescription claims written by this provider, covering 227 Medicare beneficiaries and totaling roughly $488K in drug spend, split 18% brand-name and 82% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.

Dermatology Physician is a mid-sized specialty nationwide, with 14,610 enrolled providers across 53 states and an average of 729 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

1524 W OKMULGEE ST
MUSKOGEE, OK 74401

Provider Details

NPI 1639208937
Specialty Dermatology Physician
Credentials D.O.
Gender Male
NPI Issued 03/04/2007

CMS Quality Score (MIPS)

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

0
Final Score
Avg: 83.1
0
Quality

Reporting: Individual

Brand vs generic prescribing mix · Typical

JEFFREY ENDSLEY, D.O. — brand share 18.0%
Specialty average (est.)

18% brand-name claims vs 82% generic, on 473 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.

473
Total Claims
$488K
Total Drug Cost
227
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
581
Total Day Supply
14,410
Brand vs Generic
18% brand / 82% generic
Brand Drug Cost
$469K
Generic Drug Cost
$18K
Antibiotic Claims
26

Patient Demographics

Average Patient Age
77.5 years
Avg HCC Risk Score
1.25
Gender Split
52% female / 48% male
Age Distribution
<65: 12, 65-74: 62, 75-84: 115, 85+: 38

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Halobetasol Propionate
40
Ketoconazole
39
Fluorouracil
28
Mupirocin
28
Clobetasol Propionate
24
Dupixent Syringe
Dupilumab
24
Metronidazole
24
Triamcinolone Acetonide
23
Acyclovir
20
Methotrexate
Methotrexate Sodium
19

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

Dermatology Physician Overview

How JEFFREY ENDSLEY, D.O. fits within the Dermatology Physician landscape nationally.

14,610
Dermatology Physician Providers in US
53
States with Dermatology Physician
729
Avg Claims per Provider

JEFFREY ENDSLEY, D.O.'s 473 claims are below the specialty average of 729.

Nearby Dermatology Physician Providers in Oklahoma

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

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

Frequently Asked Questions

What is JEFFREY ENDSLEY, D.O.'s specialty?
JEFFREY ENDSLEY, D.O. specializes in Dermatology Physician and practices in MUSKOGEE, Oklahoma. Credentials: D.O..
How much does JEFFREY ENDSLEY, D.O. prescribe under Medicare Part D?
In 2023, JEFFREY ENDSLEY, D.O. wrote 473 Medicare Part D claims totaling $488K in drug costs for 227 beneficiaries.
What is JEFFREY ENDSLEY, D.O.'s Medicare quality score?
JEFFREY ENDSLEY, D.O. has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JEFFREY ENDSLEY, D.O. located?
JEFFREY ENDSLEY, D.O. is located at 1524 W OKMULGEE ST, MUSKOGEE, OK, 74401. Phone: (918) 682-5397.
What is JEFFREY ENDSLEY, D.O.'s NPI number?
JEFFREY ENDSLEY, D.O.'s National Provider Identifier (NPI) is 1639208937, issued on 03/04/2007.
Does JEFFREY ENDSLEY, D.O. prescribe more brand-name or generic drugs?
JEFFREY ENDSLEY, D.O.'s prescribing is 18% brand-name and 82% generic drugs by claim count, with $469K in brand drug costs.
How many Dermatology Physician providers are there in the US?
There are 14,610 Dermatology Physician providers across 53 states in the US. The average Dermatology Physician provider writes 729 Medicare Part D claims per year.
What drugs does JEFFREY ENDSLEY, D.O. prescribe most often?
Based on 2023 Medicare Part D data, JEFFREY ENDSLEY, D.O.'s most frequently prescribed drugs include Halobetasol Propionate, Ketoconazole, Fluorouracil. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JEFFREY ENDSLEY, D.O. accept Medicare?
JEFFREY ENDSLEY, D.O. appears in CMS Medicare data with 473 Part D claims and 227 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JEFFREY ENDSLEY, D.O.'s credentials?
JEFFREY ENDSLEY, D.O.'s NPI is 1639208937 with credentials D.O.. 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