COMPREHENSIVE ENDOCRINOLOGY, P.C.
NPI 1093999005
Internal Medicine - Endocrinology, Diabetes & Metabolism in Denver, CO

Q: What is Comprehensive Endocrinology, P.C.'s NPI number?

The NPI number for Comprehensive Endocrinology, P.C. is 1093999005. It was assigned to this organization in the NPPES registry on December 27, 2007.

Q: What is Comprehensive Endocrinology, P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Active since December 27, 2007CLIA 06D1077463 · Waiver

4545 E 9TH AVE STE 245, DENVER, CO 80220(888) 919-6316(303) 321-3668 Get Directions Write a Review

NPPES record last updated: September 8, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Sep 8, 2026, Jan 1, 2026 (2 updates tracked since 2026).

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About Comprehensive Endocrinology, P.c. NPPES

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

COMPREHENSIVE ENDOCRINOLOGY, P.C. (NPI 1093999005) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Denver, Colorado and active in the NPI registry since December 2007. The organization holds a CLIA Waiver certificate valid through December 10, 2027 and lists Claudia Panzer, President, as its authorized official.

NPPES Registry Identity

NPI1093999005

Entity TypeOrganization

Primary Taxonomy207RE0101X

Legal Business NameCOMPREHENSIVE ENDOCRINOLOGY, P.C.

Location Address4545 E 9TH AVE STE 245Denver, CO 80220-3919

Mailing Address4545 E 9th Ave Ste 245Denver, CO 80220-3919 · (888) 919-6316 · Fax (303) 321-3668

Phone(888) 919-6316

Fax(303) 321-3668

Organization SubpartNo

Authorized OfficialClaudia PanzerPresident · (888) 418-4988

Enumeration DateDecember 27, 2007

Last NPPES UpdateSeptember 8, 20262 updates tracked since enumeration

NPPES CertifiedSeptember 8, 2026

✔ NPI 1093999005 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians

Taxonomy Code207RE0101X

Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

4545 E 9TH AVE STE 245, Denver, CO 80220

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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

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)

Comprehensive Endocrinology, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by January 31, 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

StateColoradoEnrollment IDO20080821000431Non-DME Part B · Clinic/Group PracticeDue dateJanuary 31, 2027

Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Comprehensive Endocrinology, P.C., which bills Medicare for the services this clinician delivers.

Clinician (1)

Claudia Panzer, MD

Endocrinology

NPI 1538122007

4545 E 9TH AVE STE 245
Denver, CO 80220

(888) 919-6316

✔ PECOS✔ Accepts MedicareSame address

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 Waiver 06D1077463

Comprehensive Endocrinology · Denver, CO

Active · expires Dec 10, 2027

CLIA Number06D1077463

Laboratory TypePhysician Office

Certificate Effective DateDecember 11, 2025

Certificate Expiration DateDecember 10, 2027

Laboratory DirectorClaudia A. Panzer MD

Laboratory Phone(888) 418-4988

Laboratory LocationComprehensive Endocrinology4500 E 9th Ave Suite 160, Denver, CO 80220

CLIA data matches this NPI record on: Name Phone

This certificate is issued to a laboratory to perform only waived tests.

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 Comprehensive Endocrinology, P.C.'s NPI number?

The NPI number for Comprehensive Endocrinology, P.C. is 1093999005. It was assigned to this organization in the NPPES registry on December 27, 2007.

Where is Comprehensive Endocrinology, P.C. located?

Comprehensive Endocrinology, P.C. is located at 4545 E 9th Ave Ste 245, Denver, CO 80220. The listed phone number is (888) 919-6316.

What is Comprehensive Endocrinology, P.C.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Comprehensive Endocrinology, P.C. enrolled in Medicare?

Yes. Comprehensive Endocrinology, P.C. is registered in the Medicare PECOS enrollment system.

When is Comprehensive Endocrinology, P.C.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Colorado, Clinic/Group Practice) is due for revalidation by January 31, 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 Comprehensive Endocrinology, P.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Comprehensive Endocrinology, P.C.. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Comprehensive Endocrinology, P.C. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 06D1077463) is associated with this NPI, valid through December 10, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Comprehensive Endocrinology, P.C. was last updated on September 8, 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.