2026 NPPES data Oral and Maxillofacial Surgery (Dentist) NPI 1538535901 DDS, MD
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JOHN COMBS, DDS, MD

Oral and Maxillofacial Surgery (Dentist) in BETHESDA, 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
27
Medicare Part D claims · 18 beneficiaries · Oral and Maxillofacial Surgery (Dentist) avg: 378
Industry payments
$125
3 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JOHN COMBS, DDS, MD is a Oral and Maxillofacial Surgery (Dentist) ([object Object]) practicing in BETHESDA, Maryland with a Medicare Part D prescribing footprint of 27 claims across 18 beneficiaries . Industry payments of $125 across 3 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JOHN COMBS, DDS, MD filed 27 Medicare Part D claims in 2023 across BETHESDA, Maryland. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

JOHN COMBS, DDS, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/19/2015

NPI 1538535901

Primary specialty

Oral and Maxillofacial Surgery (Dentist)

Mid-sized

7,631 US NPIs in this specialty

Medicare Part D claims

27 93% vs specialty avg

2023 prescription claims

Specialty avg: 378

Specialty distribution in Maryland

How Oral and Maxillofacial Surgery (Dentist) compares to other specialties among Maryland providers

Maryland providers

Oral and Maxillofacial Surgery (Dentist) share within Maryland

1. Oral and Maxillofacial Surgery (Dentist)42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Oral and Maxillofacial Surgery (Dentist) share within Maryland

Specialty board-certification context

Estimated specialty board-certified rate — Oral and Maxillofacial Surgery (Dentist) (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Oral and Maxillofacial Surgery (Dentist) ABMS/AOA estimate

Est. board-certified rate (Oral and Maxillofacial Surgery (Dentist)) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Oral and Maxillofacial Surgery (Dentist)) — 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 COMBS, DDS, MD is a Oral and Maxillofacial Surgery (Dentist) provider practicing in BETHESDA, Maryland, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DDS, MD. NPI: 1538535901. 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 COMBS, DDS, MD appears in the CMS NPPES registry as a Oral and Maxillofacial Surgery (Dentist) provider holding DDS, MD credentials at 8901 ROCKVILLE PIKE, BETHESDA, MD, 20889, with a listed phone of (301) 295-4340. NPI 1538535901 was issued on 08/19/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COMBS 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 27 prescription claims written by this provider, covering 18 Medicare beneficiaries and totaling roughly $115 in drug spend, with an opioid prescribing rate of 48.1%. 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.

Oral and Maxillofacial Surgery (Dentist) is a mid-sized specialty nationwide, with 7,631 enrolled providers across 52 states and an average of 378 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

8901 ROCKVILLE PIKE
BETHESDA, MD 20889

Provider Details

NPI 1538535901
Specialty Oral and Maxillofacial Surgery (Dentist)
Credentials DDS, MD
Gender Male
NPI Issued 08/19/2015

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 JOHN COMBS, DDS, MD. Source: openpaymentsdata.cms.gov.

Total received

$125

Largest payer

KLS-Martin L.P.

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.

27
Total Claims
$115
Total Drug Cost
18
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
27
Total Day Supply
163
Brand Drug Cost
$0
Generic Drug Cost
$115
Opioid Claims
13 (48.1% rate)

Patient Demographics

Average Patient Age
65.5 years
Avg HCC Risk Score
0.89

Oral and Maxillofacial Surgery (Dentist) Overview

How JOHN COMBS, DDS, MD fits within the Oral and Maxillofacial Surgery (Dentist) landscape nationally.

7,631
Oral and Maxillofacial Surgery (Dentist) Providers in US
52
States with Oral and Maxillofacial Surgery (Dentist)
378
Avg Claims per Provider

JOHN COMBS, DDS, MD's 27 claims are below the specialty average of 378.

Nearby Oral and Maxillofacial Surgery (Dentist) Providers in Maryland

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

Compare Oral and Maxillofacial Surgery (Dentist) nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN COMBS, DDS, MD's specialty?
JOHN COMBS, DDS, MD specializes in Oral and Maxillofacial Surgery (Dentist) and practices in BETHESDA, Maryland. Credentials: DDS, MD.
How much does JOHN COMBS, DDS, MD prescribe under Medicare Part D?
In 2023, JOHN COMBS, DDS, MD wrote 27 Medicare Part D claims totaling $115 in drug costs for 18 beneficiaries.
Where is JOHN COMBS, DDS, MD located?
JOHN COMBS, DDS, MD is located at 8901 ROCKVILLE PIKE, BETHESDA, MD, 20889. Phone: (301) 295-4340.
What is JOHN COMBS, DDS, MD's NPI number?
JOHN COMBS, DDS, MD's National Provider Identifier (NPI) is 1538535901, issued on 08/19/2015.
Does JOHN COMBS, DDS, MD prescribe opioids?
Yes, JOHN COMBS, DDS, MD had 13 opioid claims in 2023 with an opioid prescribing rate of 48.1%.
How many Oral and Maxillofacial Surgery (Dentist) providers are there in the US?
There are 7,631 Oral and Maxillofacial Surgery (Dentist) providers across 52 states in the US. The average Oral and Maxillofacial Surgery (Dentist) provider writes 378 Medicare Part D claims per year.
Does JOHN COMBS, DDS, MD accept Medicare?
JOHN COMBS, DDS, MD appears in CMS Medicare data with 27 Part D claims and 18 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN COMBS, DDS, MD's credentials?
JOHN COMBS, DDS, MD's NPI is 1538535901 with credentials DDS, 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