Dean J. Williams, M.D.
Emergency Medicine Physician · Erie, CO
Dean J. Williams, M.D. is an emergency medicine physician with a practice address in Erie, Colorado, and NPI 1104841501, issued on Jul 13, 2006. Check the license (Colorado 48666, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Dean J. Williams
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 48666 CO
C205088 CA
MD17020 HI
MD-48063 IA
15305 ND
and 3 more
Self-reported in NPPES; status is on the state search - Practice location
- PO Box 252, Erie, CO 80516
- Phone
- (720) 505-1753
- Enumerated
- Jul 13, 2006
- Record last updated
- Jun 2, 2026
- Medicare enrollment
- Enrolled (PECOS I20160107002225); accepts Medicare assignment
- Medical or professional school
- University Of Calgary, Faculty Of Medicine, 1994
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,434 in Colorado → Look up another NPI →
Verify Dean J. Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 48666Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average emergency medicine physician in 2024
77 Medicare Part D claims for 62 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
4 hospitals and group practices
- Trinity Regional Medical CenterFort Dodge, IA · Acute Care Hospitals2 of 5 stars
- Geisinger ClinicWilkes Barre, PA
- North Platte Nebraska Hospital CorporationNorth Platte, NE
- Woodbury Emergency Group, PCSioux City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Dean J. Williams among 1,434 emergency medicine physician records in Colorado
Dean J. Williams, M.D. is one of 1,434 emergency medicine physician records with a practice address in Colorado. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 57% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1994 · median 2011 among the 810 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Colorado
There are 1,434 emergency medicine physician records in Colorado.
All 1,434 in Colorado → Every provider in Erie → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Zachary Blea, MDEstes Park, CO 805171184298374
- Scott Chew, MDEstes Park, CO 805171508853144
- Christopher Daley, MDEstes Park, CO 805171770570046
- Shanda Gomes, M.D.Estes Park, CO 805171669776373
- Keith McNab, DOFort Collins, CO 805211013354885
- Kriss DellotaFort Collins, CO 805241730164708
- Brandon Farmer, M.D.Fort Collins, CO 805241851336077
- Jason GreenFort Collins, CO 805241790758233
Common questions
What is Dean J. Williams, M.D.'s NPI number?
Dean J. Williams, M.D.'s National Provider Identifier (NPI) is 1104841501, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dean J. Williams, M.D. located?
The NPPES record lists a practice address at PO Box 252, Erie, CO, 80516. Phone: (720) 505-1753. Providers update this record themselves, so call before visiting.
How can I verify Dean J. Williams, M.D.'s license?
NPPES lists Colorado license number 48666, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dean J. Williams, M.D. prescribe under Medicare Part D?
In 2024, Dean J. Williams, M.D. had 77 Medicare Part D claims for 62 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions 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.