1. Home
  2. Directory
  3. Colorado
  4. Erie
  5. Emergency Medicine
  6. NPI Profile

DEAN J WILLIAMS M.D.
NPI 1104841501
Emergency Medicine in Erie, CO

Active since July 13, 2006PECOS EnrolledAccepts Medicare Assignment

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 2, 2026, Nov 3, 2022, Nov 13, 2015 (3 updates tracked since 2015).

About Dean J Williams M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DEAN J WILLIAMS M.D. (NPI 1104841501) is an individual emergency medicine provider in Erie, Colorado, licensed in Colorado (48666) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Trinity Regional Medical Center, and is a graduate of University Of Calgary, Faculty Of Medicine (1994).

NPPES Registry Identity

NPI1104841501
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDEAN J WILLIAMSCredential: M.D.
Location AddressPO BOX 252Erie, CO 80516-0252
Mailing AddressPo Box 252Erie, CO 80516-0252 · (720) 505-1753
Phone(720) 505-1753
Sole ProprietorYes
Medical School CMSUniversity Of Calgary, Faculty Of MedicineGraduated 1994
Enumeration DateJuly 13, 2006
Last NPPES UpdateJune 2, 20263 updates tracked since enumeration
NPPES CertifiedJune 2, 2026
✔ NPI 1104841501 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in CO · 48666✔ Licensed in IA · MD-48063✔ Licensed in WI · 61394-20✔ Licensed in NE · 26916✔ Licensed in PA · MD418570✔ Licensed in HI · MD17020✔ Licensed in CA · C205088✔ Licensed in ND · 15305
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
PO BOX 252, Erie, CO 80516
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Nebraska, Blue Cross Blue Shield of North Dakota, Medica.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dean J Williams M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103721758
PECOS Enrollment IDI20121009000644, I20160107002225, I20210426000076
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
119 services114 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
102 services100 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
47 services47 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Trinity Regional Medical Center

Acute Care Hospitals · Fort Dodge, IA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160016
Location802 Kenyon RdFort Dodge, IA 50501 · Webster County
Emergency services Birthing friendly

St Lukes Regional Medical Center

Acute Care Hospitals · Sioux City, IA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160146
Location2720 Stone Park BoulevardSioux City, IA 51104 · Woodbury County
Emergency services Birthing friendly

Great Plains Health

Acute Care Hospitals · North Platte, NE
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number280065
Location601 West Leota StNorth Platte, NE 69101 · Lincoln County
Emergency services Birthing friendly

Geisinger Medical Center

Acute Care Hospitals · Danville, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390006
Location100 North Academy AvenueDanville, PA 17822 · Montour County
Emergency services Birthing friendly

Geisinger Wyoming Valley Medical Center

Acute Care Hospitals · Wilkes Barre, PA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390270
Location1000 East Mountain BoulevardWilkes Barre, PA 18711 · Luzerne County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 80516 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.43 typical visit price
range $58.06 – $174.82
Typical copayment $22.35 (range $14.51 – $43.70)
Most-billed visit code 99203
Established Patient
$102.03 typical visit price
range $18.88 – $142.79
Typical copayment $25.50 (range $4.72 – $35.69)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Dean Williams's NPI number?

The NPI number for Dean Williams is 1104841501. It was assigned to this individual provider in the NPPES registry on July 13, 2006.

Where is Dean Williams located?

Dean Williams practices at PO Box 252, Erie, CO 80516. The listed phone number is (720) 505-1753.

What is Dean Williams's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Dean Williams enrolled in Medicare?

Yes. Dean Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Dean Williams accept?

Health plans from Blue Cross Blue Shield of North Dakota, Blue Cross and Blue Shield of Nebraska and Medica list Dean Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Dean Williams affiliated with any hospitals?

According to CMS data, Dean Williams is affiliated with Trinity Regional Medical Center, St Lukes Regional Medical Center, Great Plains Health, Geisinger Medical Center and Geisinger Wyoming Valley Medical Center.

When was this NPI record last updated?

The NPPES record for Dean Williams was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.