2026 NPPES data Interventional Cardiology Physician NPI 1821081126 MD
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STAFFORD WARREN, MD

Interventional Cardiology Physician in ANNAPOLIS, Maryland. 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
65
Medicare Part D claims · 11 beneficiaries · Interventional Cardiology Physician avg: 3K
What the federal data reveals: STAFFORD WARREN, MD is a Interventional Cardiology Physician ([object Object]) practicing in ANNAPOLIS, Maryland with a Medicare Part D prescribing footprint of 65 claims across 11 beneficiaries .

What stands out: STAFFORD WARREN, MD filed 65 Medicare Part D claims in 2023 across ANNAPOLIS, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

STAFFORD WARREN, 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).

STAFFORD WARREN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/23/2005

NPI 1821081126

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

65 98% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in Maryland

How Interventional Cardiology Physician compares to other specialties among Maryland providers

Maryland providers

Interventional Cardiology Physician share within Maryland

1. Interventional Cardiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Interventional Cardiology Physician share within Maryland

Specialty board-certification context

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

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

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

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

STAFFORD WARREN, MD is a Interventional Cardiology Physician provider practicing in ANNAPOLIS, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1821081126. 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.

STAFFORD WARREN, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 888 BESTGATE RD, ANNAPOLIS, MD, 21401, with a listed phone of (410) 573-9805. NPI 1821081126 was issued on 08/23/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WARREN 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 65 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $7K 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.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

888 BESTGATE RD
ANNAPOLIS, MD 21401

Provider Details

NPI 1821081126
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 08/23/2005

Medicare Part D Prescribing Data

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

65
Total Claims
$7K
Total Drug Cost
11
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
157
Total Day Supply
4,534
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
76.5 years
Avg HCC Risk Score
1.08

Interventional Cardiology Physician Overview

How STAFFORD WARREN, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

STAFFORD WARREN, MD's 65 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in Maryland

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

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STAFFORD WARREN, MD's specialty?
STAFFORD WARREN, MD specializes in Interventional Cardiology Physician and practices in ANNAPOLIS, Maryland. Credentials: MD.
How much does STAFFORD WARREN, MD prescribe under Medicare Part D?
In 2023, STAFFORD WARREN, MD wrote 65 Medicare Part D claims totaling $7K in drug costs for 11 beneficiaries.
Where is STAFFORD WARREN, MD located?
STAFFORD WARREN, MD is located at 888 BESTGATE RD, ANNAPOLIS, MD, 21401. Phone: (410) 573-9805.
What is STAFFORD WARREN, MD's NPI number?
STAFFORD WARREN, MD's National Provider Identifier (NPI) is 1821081126, issued on 08/23/2005.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
Does STAFFORD WARREN, MD accept Medicare?
STAFFORD WARREN, MD appears in CMS Medicare data with 65 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STAFFORD WARREN, MD's credentials?
STAFFORD WARREN, MD's NPI is 1821081126 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