Spencer B. Williams, PA-C
Physician Assistant · Denver, CO
Spencer B. Williams, PA-C is a physician assistant with a practice address in Denver, Colorado, and NPI 1952149858, issued on Jul 16, 2024. Check the license (Colorado PA.0008982, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Spencer B. Williams
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA.0008982 CO
Self-reported in NPPES; status is on the state search - Practice location
- 777 Bannock St, Denver, CO 80204
- Phone
- (303) 436-4949
- Enumerated
- Jul 16, 2024
- Record last updated
- Apr 21, 2025
- Fax
- (303) 602-4560
- Medicare enrollment
- Enrolled (PECOS I20250424002703); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,767 in Colorado → Look up another NPI →
Also registered at 777 Bannock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Spencer B. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license PA.0008982Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Denver Health And Hospital AuthorityDenver, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Spencer B. Williams among 3,767 physician assistant records in Colorado
Spencer B. Williams, PA-C is one of 3,767 physician assistant records with a practice address in Colorado. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 89% of them.
- NPI issued2024 · 89% of these records are older, 6% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2024 · median 2017 among the 2,351 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
540 physician assistant records list a practice address in Denver
They are 540 of the 25,068 NPPES records with a practice address in Denver, and 3,767 physician assistant records in Colorado.
All 3,767 in Colorado → Every provider in Denver → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Magdalena Aguayo, PADenver, CO 802041548295017
- Constance Boyle, PADenver, CO 802041427077155
- Barbara Burrowes, PA CDenver, CO 802041891745485
- Kathryn Davis, PADenver, CO 802041730109604
- Neil Dobson, PADenver, CO 802041154341022
- Tara Edick, PADenver, CO 802041972523850
- Mary Ellen Flynn, PADenver, CO 802041043231764
- Thia Gonzales, PADenver, CO 802041003833864
Common questions
What is Spencer B. Williams, PA-C's NPI number?
Spencer B. Williams, PA-C's National Provider Identifier (NPI) is 1952149858, issued on Jul 16, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Spencer B. Williams, PA-C located?
The NPPES record lists a practice address at 777 Bannock St, Denver, CO, 80204. Phone: (303) 436-4949. Providers update this record themselves, so call before visiting.
How can I verify Spencer B. Williams, PA-C's license?
NPPES lists Colorado license number PA.0008982, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.