Marcus Knapp, PA
NPI 1861429995 · Physician Assistant · Watertown, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcus Knapp, PA is a Physician Assistant provider in Watertown, NY (NPI 1861429995).
Provider details
- NPI number
- 1861429995
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 0090201 (NY)
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
538 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 | 184 | $55 |
| Test to Measure Expiratory Airflow and Volume94010 | 165 | $7 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $81 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 74 | $29 |
| Smoking and Tobacco Use Intensive Counseling, 4-10 Minutes99406 | 26 | $10 |
Typical Medicare-allowed amounts for these services range $7–$81 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 209 | 41 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 174 | 79 |
| Umeclidinium Bromidebrand: Incruse Ellipta | 134 | 29 |
| Fluticasone Propion/Salmeterolbrand: Fluticasone-Salmeterol | 126 | 31 |
| Fluticasone/Vilanterolbrand: Breo Ellipta | 112 | 25 |
| Albuterol Sulfatebrand: Ventolin Hfa | 79 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$84 across 4 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
- 2006-06-26
- Last updated
- 2021-01-22
- Certified
- 2021-01-22
Frequently asked questions
- What is Marcus Knapp's NPI number?
- Marcus Knapp's National Provider Identifier (NPI) is 1861429995, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcus Knapp's specialty?
- Marcus Knapp is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marcus Knapp located?
- Marcus Knapp's practice location on file with NPPES is 19320 US Route 11 Bldg III, Watertown, NY 13601-5337.
- What is Marcus Knapp's phone number?
- The practice phone number listed in the NPPES registry for Marcus Knapp is (315) 786-0254.
- Does Marcus Knapp accept Medicare?
- Marcus Knapp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcus Knapp's NPI active?
- Yes — Marcus Knapp's NPI (1861429995) is active in the NPPES registry as of the last update on 2021-01-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.