2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1730197229 M.D.
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MICHAEL DEMPSEY, M.D.

Endocrinology, Diabetes & Metabolism Physician in ROCKVILLE, 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
1K
Medicare Part D claims · 153 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MICHAEL DEMPSEY, M.D. is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in ROCKVILLE, Maryland with a Medicare Part D prescribing footprint of 1K claims across 153 beneficiaries — 53% brand-name prescribing .

What stands out: MICHAEL DEMPSEY, M.D. filed 1,478 Medicare Part D claims in 2023 across ROCKVILLE, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

MICHAEL DEMPSEY, M.D. 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).

MICHAEL DEMPSEY, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 08/03/2006

NPI 1730197229

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

1,478 44% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Maryland

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Maryland providers

Maryland providers

Endocrinology, Diabetes & Metabolism Physician share within Maryland

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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).

MICHAEL DEMPSEY, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider practicing in ROCKVILLE, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1730197229. 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.

MICHAEL DEMPSEY, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 3200 TOWER OAKS BLVD, ROCKVILLE, MD, 20852, with a listed phone of (301) 770-7373. NPI 1730197229 was issued on 08/03/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DEMPSEY 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 1,478 prescription claims written by this provider, covering 153 Medicare beneficiaries and totaling roughly $921K in drug spend, split 53% brand-name and 47% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

3200 TOWER OAKS BLVD
ROCKVILLE, MD 20852

Provider Details

NPI 1730197229
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D.
Gender Male
NPI Issued 08/03/2006

Brand vs generic prescribing mix · Brand-heavy

MICHAEL DEMPSEY, M.D. — brand share 53.0%
Specialty average (est.)

53% brand-name claims vs 47% generic, on 1,478 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.

1,478
Total Claims
$921K
Total Drug Cost
153
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,727
Total Day Supply
110,351
Brand vs Generic
53% brand / 47% generic
Brand Drug Cost
$893K
Generic Drug Cost
$19K

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
1.07
Gender Split
50% female / 50% 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
Synthroid
Levothyroxine Sodium
147
Jardiance
Empagliflozin
114
Ozempic
Semaglutide
95
Metformin Hcl
74
Rosuvastatin Calcium
61
Atorvastatin Calcium
58
Tresiba Flextouch U-100
Insulin Degludec
55
Ezetimibe
43
Fiasp Flextouch
Insulin Aspart (Niacinamide)
41
Alendronate Sodium
36

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

Endocrinology, Diabetes & Metabolism Physician Overview

How MICHAEL DEMPSEY, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

MICHAEL DEMPSEY, M.D.'s 1,478 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Maryland

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL DEMPSEY, M.D.'s specialty?
MICHAEL DEMPSEY, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in ROCKVILLE, Maryland. Credentials: M.D..
How much does MICHAEL DEMPSEY, M.D. prescribe under Medicare Part D?
In 2023, MICHAEL DEMPSEY, M.D. wrote 1,478 Medicare Part D claims totaling $921K in drug costs for 153 beneficiaries.
Where is MICHAEL DEMPSEY, M.D. located?
MICHAEL DEMPSEY, M.D. is located at 3200 TOWER OAKS BLVD, ROCKVILLE, MD, 20852. Phone: (301) 770-7373.
What is MICHAEL DEMPSEY, M.D.'s NPI number?
MICHAEL DEMPSEY, M.D.'s National Provider Identifier (NPI) is 1730197229, issued on 08/03/2006.
Does MICHAEL DEMPSEY, M.D. prescribe more brand-name or generic drugs?
MICHAEL DEMPSEY, M.D.'s prescribing is 53% brand-name and 47% generic drugs by claim count, with $893K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does MICHAEL DEMPSEY, M.D. prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL DEMPSEY, M.D.'s most frequently prescribed drugs include Synthroid, Jardiance, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL DEMPSEY, M.D. accept Medicare?
MICHAEL DEMPSEY, M.D. appears in CMS Medicare data with 1,478 Part D claims and 153 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL DEMPSEY, M.D.'s credentials?
MICHAEL DEMPSEY, M.D.'s NPI is 1730197229 with credentials M.D.. 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