Marc Williams, PA
NPI 1659542926 · Medical Physician Assistant · Pueblo, CO
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Williams, PA is a Medical Physician Assistant provider in Pueblo, CO (NPI 1659542926).
Provider details
- NPI number
- 1659542926
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
- License
- 1095 (CO)
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 tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 97 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 263 | 75 |
| Levothyroxine Sodium | 245 | 62 |
| Lisinopril | 167 | 47 |
| Amlodipine Besylate | 163 | 53 |
| Losartan Potassium | 159 | 46 |
| Rosuvastatin Calcium | 140 | 40 |
| Omeprazole |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$603 across 30 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
- 2008-03-14
- Last updated
- 2008-03-14
Frequently asked questions
- What is Marc Williams's NPI number?
- Marc Williams's National Provider Identifier (NPI) is 1659542926, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Williams's specialty?
- Marc Williams is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marc Williams located?
- Marc Williams's practice location on file with NPPES is 1600 N Grand Ave Ste 310, Pueblo, CO 81003-2729.
- What is Marc Williams's phone number?
- The practice phone number listed in the NPPES registry for Marc Williams is (719) 542-0072.
- Does Marc Williams accept Medicare?
- Marc Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Williams's NPI active?
- Yes — Marc Williams's NPI (1659542926) is active in the NPPES registry as of the last update on 2008-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.