2026 NPPES data Diagnostic Radiology Physician NPI 1538135512 MD
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JOHN STEWART, MD

Diagnostic Radiology Physician in ALBUQUERQUE, New Mexico. 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
14
Medicare Part D claims · Diagnostic Radiology Physician avg: 63

What the federal data shows

JOHN STEWART, MD filed 14 Medicare Part D claims in 2023 as a Diagnostic Radiology Physician in ALBUQUERQUE, New Mexico.

14
Part D claims, 2023

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.

JOHN STEWART, MD's Medicare Part D volume vs every U.S. prescriber

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

14 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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-eligible specialty (heuristic — not verified)

JOHN STEWART, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JOHN STEWART, MD?

Quality data not reported

NPI registry status

Active

Issued 02/28/2006

NPI 1538135512

Primary specialty

Diagnostic Radiology Physician

Mid-sized

39,474 US NPIs in this specialty

Medicare Part D claims

14 78% vs specialty avg

2023 prescription claims

Specialty avg: 63

Specialty distribution in New Mexico

How Diagnostic Radiology Physician compares to other specialties among New Mexico providers

New Mexico providers

Diagnostic Radiology Physician share within New Mexico

1. Diagnostic Radiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Diagnostic Radiology Physician share within New Mexico

Specialty board-certification context

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

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

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

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

JOHN STEWART, MD is a Diagnostic Radiology Physician provider practicing in ALBUQUERQUE, New Mexico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1538135512. 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.

JOHN STEWART, MD appears in the CMS NPPES registry as a Diagnostic Radiology Physician provider holding MD credentials at 8020 CONSTITUTION PLACE NE, ALBUQUERQUE, NM, 87110, with a listed phone of (505) 998-1317. NPI 1538135512 was issued on 02/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what STEWART 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 14 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $246 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.

Diagnostic Radiology Physician is a mid-sized specialty nationwide, with 39,474 enrolled providers across 56 states and an average of 63 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

8020 CONSTITUTION PLACE NE
ALBUQUERQUE, NM 87110

Provider Details

NPI 1538135512
Specialty Diagnostic Radiology Physician
Credentials MD
Gender Male
NPI Issued 02/28/2006

Medicare Part D Prescribing Data

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

14
Total Claims
$246
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
38
Total Day Supply
1,090
Generic Drug Cost
$235

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
0.74

Diagnostic Radiology Physician Overview

How JOHN STEWART, MD fits within the Diagnostic Radiology Physician landscape nationally.

39,474
Diagnostic Radiology Physician Providers in US
56
States with Diagnostic Radiology Physician
63
Avg Claims per Provider

JOHN STEWART, MD's 14 claims are below the specialty average of 63.

Nearby Diagnostic Radiology Physician Providers in New Mexico

Other clinicians with the same primary specialty enrolled in New Mexico, drawn from the same CMS NPPES roster as STEWART.

Compare Diagnostic Radiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN STEWART, MD's specialty?
JOHN STEWART, MD specializes in Diagnostic Radiology Physician and practices in ALBUQUERQUE, New Mexico. Credentials: MD.
How much does JOHN STEWART, MD prescribe under Medicare Part D?
In 2023, JOHN STEWART, MD wrote 14 Medicare Part D claims totaling $246 in drug costs for N/A beneficiaries.
Where is JOHN STEWART, MD located?
JOHN STEWART, MD is located at 8020 CONSTITUTION PLACE NE, ALBUQUERQUE, NM, 87110. Phone: (505) 998-1317.
What is JOHN STEWART, MD's NPI number?
JOHN STEWART, MD's National Provider Identifier (NPI) is 1538135512, issued on 02/28/2006.
How many Diagnostic Radiology Physician providers are there in the US?
There are 39,474 Diagnostic Radiology Physician providers across 56 states in the US. The average Diagnostic Radiology Physician provider writes 63 Medicare Part D claims per year.
Does JOHN STEWART, MD accept Medicare?
JOHN STEWART, MD appears in CMS Medicare data with 14 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN STEWART, MD's credentials?
JOHN STEWART, MD's NPI is 1538135512 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