1. Home
  2. Directory
  3. Wyoming
  4. Casper
  5. Internal Medicine
  6. NPI Profile

ROCKY MOUNTAIN ONCOLOGY CENTER, LLC
NPI 1003862723
Internal Medicine - Hematology & Oncology in Casper, WY

Active since May 25, 2006CLIA 53D1049790 · Certificate of Compliance
6501 EAST 2ND STREET, CASPER, WY 82609(307) 235-5433(307) 233-4700 Get Directions Write a Review

NPPES record last updated: April 24, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Rocky Mountain Oncology Center, Llc NPPES

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

ROCKY MOUNTAIN ONCOLOGY CENTER, LLC (NPI 1003862723), doing business as Rocky Mountain Oncology Center, is a healthcare organization registered as a hematology & oncology in Casper, Wyoming and active in the NPI registry since May 2006. The organization holds a CLIA Certificate of Compliance certificate valid through July 6, 2028 and lists Chaoqiang Lin, Executive Vice President, as its authorized official.

NPPES Registry Identity

NPI1003862723
Entity TypeOrganization
Primary Taxonomy207RH0003X
Legal Business NameROCKY MOUNTAIN ONCOLOGY CENTER, LLC
Location Address6501 EAST 2ND STREETCasper, WY 82609-4293
Mailing AddressPo Box 846266Los Angeles, CA 90084-6266 · (307) 235-5433 · Fax (307) 233-4700
Phone(307) 235-5433
Fax(307) 233-4700
Organization SubpartNo
Authorized OfficialChaoqiang LinExecutive Vice President · (214) 587-4079
Enumeration DateMay 25, 2006
Last NPPES UpdateApril 24, 2026
NPPES CertifiedApril 24, 2026
✔ NPI 1003862723 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in WY · 2438A
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedRadiology · Radiation OncologyTaxonomy 2085R0001X · License 4463A (WY)
Also ListedNurse Practitioner · FamilyTaxonomy 363LF0000X · License 16021.02 (WY)
6501 EAST 2ND STREET, Casper, WY 82609
Open in Google Maps ↗

Other Names 1

Doing Business AsRocky Mountain Oncology Center

Other Identifiers 1

Medicaid121006800WY

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rocky Mountain Oncology Center, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by February 28, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateWyomingEnrollment IDO20171031001744DME · Physician - General PracticeDue dateFebruary 28, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

9

Medicare enrollment records show 9 clinicians reassign Medicare billing to Rocky Mountain Oncology Center, LLC, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 7 within 10 miles. They are listed nearest first.

Clinicians, nearest first (9)

John Purviance, M.D.
Radiation Oncology
NPI 1437279692
6501 E 2ND ST ROCKY MOUNTAIN ONCOLOGY CENTER
Casper, WY 82609
(307) 235-5433
✔ PECOS✔ Accepts MedicareSame address
Adam Beighley, MD
Radiation Oncology
NPI 1659959286
6501 E 2ND ST
Casper, WY 82609
(307) 235-5433
✔ PECOS✔ Accepts MedicareSame address
Iloabueke Chineke, MD
Hematology/Oncology
NPI 1740700798
6501 E 2ND ST
Casper, WY 82609
(307) 235-5433
✔ PECOS✔ Accepts MedicareSame address
Christian Dequet, D.O.
Rheumatology
NPI 1639195357
6501 E 2ND ST
Casper, WY 82609
(307) 235-5433
✔ PECOS✔ Accepts MedicareSame address
Elie Fahed, M.D.
Medical Oncology
NPI 1356492482
6501 E 2ND ST
Casper, WY 82609
(307) 235-5433
✔ PECOS✔ Accepts MedicareSame address
Sarah Glynn, DO
Radiation Oncology
NPI 1023696622
6501 E 2ND ST
Casper, WY 82609
(307) 235-5433
✔ PECOSSame address
Debra Griner, FNP-C
Nurse Practitioner
NPI 1861460289
3632 AMERICAN WAY
Casper, WY 82604
(307) 233-7300
✔ PECOS✔ Accepts Medicare7.1 mi
Amir Abdelmalik, MD
Nuclear Medicine
NPI 1093967390
601 N CAROLINE ST
Baltimore, MD 21287
(410) 955-9446
✔ PECOS✔ Accepts Medicare1,558 mi
John Zimmermann, M.D.
Medical Oncology
NPI 1740221225
2490 S WOODWORTH LOOP #499
Palmer, AK 99645
(907) 746-7771
✔ PECOS✔ Accepts Medicare2,177 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Compliance 53D1049790

Rocky Mountain Oncology · Casper, WY
Active · expires Jul 6, 2028
CLIA Number53D1049790
Laboratory TypeCommunity Clinic
Certificate Effective DateJuly 7, 2026
Certificate Expiration DateJuly 6, 2028
Laboratory DirectorJohn Purviance
Laboratory Phone(307) 235-5433
Laboratory LocationRocky Mountain Oncology6501 East 2nd Street, Casper, WY 82609
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory after an inspection that finds the laboratory to be in compliance with all applicable CLIA requirements.

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 Rocky Mountain Oncology Center, LLC's NPI number?

The NPI number for Rocky Mountain Oncology Center, LLC is 1003862723. It was assigned to this organization in the NPPES registry on May 25, 2006. The provider is doing business as Rocky Mountain Oncology Center.

Where is Rocky Mountain Oncology Center, LLC located?

Rocky Mountain Oncology Center, LLC is located at 6501 East 2nd Street, Casper, WY 82609. The listed phone number is (307) 235-5433.

What is Rocky Mountain Oncology Center, LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Rocky Mountain Oncology Center, LLC enrolled in Medicare?

Yes. Rocky Mountain Oncology Center, LLC is registered in the Medicare PECOS enrollment system.

When is Rocky Mountain Oncology Center, LLC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (Wyoming, Physician - General Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Rocky Mountain Oncology Center, LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 9 clinicians in 6 Medicare specialties reassign their Medicare billing to Rocky Mountain Oncology Center, LLC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Radiation Oncology (3), Medical Oncology (2) and Hematology/Oncology (1). Of these, 6 practice at this address and 7 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Rocky Mountain Oncology Center, LLC hold a CLIA laboratory certificate?

Yes. A Certificate of Compliance (number 53D1049790) is associated with this NPI, valid through July 6, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Rocky Mountain Oncology Center, LLC accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 33 other insurers list Rocky Mountain Oncology Center, LLC 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.

When was this NPI record last updated?

The NPPES record for Rocky Mountain Oncology Center, LLC was last updated on April 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.