2026 NPPES data Nephrology Physician NPI 1124314869 D.O.
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JAMES DYLEWSKI, D.O.

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
208
Medicare Part D claims · 60 beneficiaries · Nephrology Physician avg: 1K
MIPS score
91.1178/100
▲ 8 pts above national avg 83.1 · [object Object]
Industry payments
$3.7K
6 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JAMES DYLEWSKI, D.O. is a Nephrology Physician ([object Object]) practicing in DENVER, Colorado with a Medicare Part D prescribing footprint of 208 claims across 60 beneficiaries . Their CMS MIPS Final Score of 91.1178/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $3.7K across 6 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JAMES DYLEWSKI, D.O. reported a CMS MIPS final score of 91.1178 out of 100, above the 83.1 national average, and filed 208 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JAMES DYLEWSKI, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

JAMES DYLEWSKI, D.O. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 06/21/2011

NPI 1124314869

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

208 86% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

MIPS final score

91.1178/100 8.017800000000008% pts

Exceptional band

vs 83.1 national avg

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

Medicare quality performance — MIPS

JAMES DYLEWSKI, D.O.'s 2023 MIPS final score plotted against the Nephrology Physician national average

High performer (top quartile)
MIPS Final Score
91.1178/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nephrology Physician) — 91.1178/100 vs national avg 83.1

0%100%National avg83%91.1%
MIPS final score (Nephrology Physician) — 91.1178/100 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).

JAMES DYLEWSKI, D.O. is a Nephrology Physician provider practicing in DENVER, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: D.O.. NPI: 1124314869. 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.

JAMES DYLEWSKI, D.O. appears in the CMS NPPES registry as a Nephrology Physician provider holding D.O. credentials at 777 BANNOCK ST, DENVER, CO, 80204, with a listed phone of (303) 201-0086. NPI 1124314869 was issued on 06/21/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DYLEWSKI 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 208 prescription claims written by this provider, covering 60 Medicare beneficiaries and totaling roughly $186K 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 91.1178/100 for the 2023 performance year (Quality 90.2343, Cost 73.4915), compared with the national average of 83.1.

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

777 BANNOCK ST
DENVER, CO 80204

Provider Details

NPI 1124314869
Specialty Nephrology Physician
Credentials D.O.
Gender Male
NPI Issued 06/21/2011

CMS Quality Score (MIPS)

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

91.1178
Final Score
Avg: 83.1
90.2343
Quality
73.4915
Cost
88
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where JAMES DYLEWSKI, D.O. 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 HEALTH AND HOSPITAL AUTHORITY
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 JAMES DYLEWSKI, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$3.7K

Largest payer

CALLIDITAS THERAPEUTICS 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

208
Total Claims
$186K
Total Drug Cost
60
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
458
Total Day Supply
13,550
Generic Drug Cost
$23K

Patient Demographics

Average Patient Age
64.3 years
Avg HCC Risk Score
4.61
Gender Split
48% female / 52% male
Age Distribution
<65: 26, 65-74: 24, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amlodipine Besylate
17
Furosemide
12
Lanthanum Carbonate
12
Losartan Potassium
11

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

Nephrology Physician Overview

How JAMES DYLEWSKI, D.O. 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

JAMES DYLEWSKI, D.O.'s 208 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 DYLEWSKI.

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

Frequently Asked Questions

What is JAMES DYLEWSKI, D.O.'s specialty?
JAMES DYLEWSKI, D.O. specializes in Nephrology Physician and practices in DENVER, Colorado. Credentials: D.O..
How much does JAMES DYLEWSKI, D.O. prescribe under Medicare Part D?
In 2023, JAMES DYLEWSKI, D.O. wrote 208 Medicare Part D claims totaling $186K in drug costs for 60 beneficiaries.
What is JAMES DYLEWSKI, D.O.'s Medicare quality score?
JAMES DYLEWSKI, D.O. has a CMS MIPS Final Score of 91.1178/100 (Quality: 90.2343, Cost: 73.4915). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JAMES DYLEWSKI, D.O. located?
JAMES DYLEWSKI, D.O. is located at 777 BANNOCK ST, DENVER, CO, 80204. Phone: (303) 201-0086.
What is JAMES DYLEWSKI, D.O.'s NPI number?
JAMES DYLEWSKI, D.O.'s National Provider Identifier (NPI) is 1124314869, issued on 06/21/2011.
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 JAMES DYLEWSKI, D.O. prescribe most often?
Based on 2023 Medicare Part D data, JAMES DYLEWSKI, D.O.'s most frequently prescribed drugs include Amlodipine Besylate, Furosemide, Lanthanum Carbonate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAMES DYLEWSKI, D.O. accept Medicare?
JAMES DYLEWSKI, D.O. appears in CMS Medicare data with 208 Part D claims and 60 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAMES DYLEWSKI, D.O.'s credentials?
JAMES DYLEWSKI, D.O.'s NPI is 1124314869 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