William Markes, PA-C
NPI 1902366396 · Physician Assistant · Duluth, MN
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Markes, PA-C is a Physician Assistant provider in Duluth, MN (NPI 1902366396).
Provider details
- NPI number
- 1902366396
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- 12974 (MN)
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 tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
39 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 39 | $63 |
Typical Medicare-allowed amounts for these services range $63–$63 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 102 | 32 |
| Oxybutynin Chloridebrand: Oxybutynin Chloride Er | 50 | 11 |
| Finasteride | 48 | 14 |
| Mirabegronbrand: Myrbetriq | 43 | 12 |
| Oxycodone Hcl | 42 | 42 |
| Solifenacin Succinate | 34 | — |
| Methenamine Hippurate | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-03-21
- Last updated
- 2019-03-21
Frequently asked questions
- What is William Markes's NPI number?
- William Markes's National Provider Identifier (NPI) is 1902366396, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Markes's specialty?
- William Markes is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is William Markes located?
- William Markes's practice location on file with NPPES is 400 East Third Street, Duluth, MN 55805-1951.
- What is William Markes's phone number?
- The practice phone number listed in the NPPES registry for William Markes is (218) 786-8364.
- Does William Markes accept Medicare?
- William Markes is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Markes's NPI active?
- Yes — William Markes's NPI (1902366396) is active in the NPPES registry as of the last update on 2019-03-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.