Carlton Mcclellan, PA-C
NPI 1477673622 · Medical Physician Assistant · Frederick, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carlton Mcclellan, PA-C is a Medical Physician Assistant provider in Frederick, MD (NPI 1477673622).
Provider details
- NPI number
- 1477673622
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- C002852 (MD)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,272 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 963 | $76 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 657 | $106 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 327 | $60 |
| Drug Test(s), Definitive, Utilizing (1) Drug Identification Methods Able to Identify Individual Drugs and Distinguish Between Structural Isomers (but Not Necessarily Stereoisomers), Including, But Not Limited to Gc/Ms (any Type, Single Or Tandem) and Lc/MsG0480 | 325 | $110 |
Typical Medicare-allowed amounts for these services range $60–$110 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 25 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 537 | 69 |
| Oxycodone Hcl | 474 | 57 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 236 | 37 |
| Gabapentin | 211 | 49 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 194 | 32 |
| Pregabalin | 136 | 33 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$137 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-30
- Last updated
- 2010-04-27
Frequently asked questions
- What is Carlton Mcclellan's NPI number?
- Carlton Mcclellan's National Provider Identifier (NPI) is 1477673622, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carlton Mcclellan's specialty?
- Carlton Mcclellan is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Carlton Mcclellan located?
- Carlton Mcclellan's practice location on file with NPPES is 196 Thomas Johnson Dr, Frederick, MD 21702-4397.
- What is Carlton Mcclellan's phone number?
- The practice phone number listed in the NPPES registry for Carlton Mcclellan is (301) 668-9988.
- Does Carlton Mcclellan accept Medicare?
- Carlton Mcclellan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carlton Mcclellan's NPI active?
- Yes — Carlton Mcclellan's NPI (1477673622) is active in the NPPES registry as of the last update on 2010-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.