2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1538122007 MD
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CLAUDIA PANZER, MD

Endocrinology, Diabetes & Metabolism Physician in DENVER, Colorado. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 198 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
53%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$542.39
14 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CLAUDIA PANZER, MD is a Endocrinology, Diabetes & Metabolism Physician ([object Object]) practicing in DENVER, Colorado with a Medicare Part D prescribing footprint of 2K claims across 198 beneficiaries — 47% brand-name prescribing . Industry payments of $542.39 across 14 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CLAUDIA PANZER, MD filed 1,845 Medicare Part D claims in 2023 across DENVER, Colorado. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

CLAUDIA PANZER, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

CLAUDIA PANZER, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/07/2006

NPI 1538122007

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

1,845 30% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Colorado

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Colorado providers

Colorado providers

Endocrinology, Diabetes & Metabolism Physician share within Colorado

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Colorado

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

CLAUDIA PANZER, MD is a Endocrinology, Diabetes & Metabolism Physician provider practicing in DENVER, Colorado, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1538122007. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CLAUDIA PANZER, MD appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 4500 E 9TH AVE STE 170, DENVER, CO, 80220, with a listed phone of (888) 418-4988. NPI 1538122007 was issued on 04/07/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PANZER most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,845 prescription claims written by this provider, covering 198 Medicare beneficiaries and totaling roughly $851K in drug spend, split 47% brand-name and 53% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

4500 E 9TH AVE STE 170
DENVER, CO 80220

Provider Details

NPI 1538122007
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials MD
Gender Female
NPI Issued 04/07/2006

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for CLAUDIA PANZER, MD. Source: openpaymentsdata.cms.gov.

Total received

$542

Largest payer

Medtronic, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

CLAUDIA PANZER, MD — brand share 47.0%
Specialty average (est.)

47% brand-name claims vs 53% generic, on 1,845 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,845
Total Claims
$851K
Total Drug Cost
198
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,586
Total Day Supply
136,558
Brand vs Generic
47% brand / 53% generic
Brand Drug Cost
$804K
Generic Drug Cost
$37K

Patient Demographics

Average Patient Age
72.4 years
Avg HCC Risk Score
1.16
Gender Split
66% female / 34% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Levothyroxine Sodium
202
Ozempic
Semaglutide
153
Metformin Hcl Er
Metformin Hcl
143
Mounjaro
Tirzepatide
117
Synthroid
Levothyroxine Sodium
105
Atorvastatin Calcium
82
Unithroid
Levothyroxine Sodium
53
Alendronate Sodium
52
Jardiance
Empagliflozin
43
Farxiga
Dapagliflozin Propanediol
38

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Endocrinology, Diabetes & Metabolism Physician Overview

How CLAUDIA PANZER, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

CLAUDIA PANZER, MD's 1,845 claims are below the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Colorado

Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as PANZER.

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CLAUDIA PANZER, MD's specialty?
CLAUDIA PANZER, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in DENVER, Colorado. Credentials: MD.
How much does CLAUDIA PANZER, MD prescribe under Medicare Part D?
In 2023, CLAUDIA PANZER, MD wrote 1,845 Medicare Part D claims totaling $851K in drug costs for 198 beneficiaries.
Where is CLAUDIA PANZER, MD located?
CLAUDIA PANZER, MD is located at 4500 E 9TH AVE STE 170, DENVER, CO, 80220. Phone: (888) 418-4988.
What is CLAUDIA PANZER, MD's NPI number?
CLAUDIA PANZER, MD's National Provider Identifier (NPI) is 1538122007, issued on 04/07/2006.
Does CLAUDIA PANZER, MD prescribe more brand-name or generic drugs?
CLAUDIA PANZER, MD's prescribing is 47% brand-name and 53% generic drugs by claim count, with $804K in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does CLAUDIA PANZER, MD prescribe most often?
Based on 2023 Medicare Part D data, CLAUDIA PANZER, MD's most frequently prescribed drugs include Levothyroxine Sodium, Ozempic, Metformin Hcl Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CLAUDIA PANZER, MD accept Medicare?
CLAUDIA PANZER, MD appears in CMS Medicare data with 1,845 Part D claims and 198 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CLAUDIA PANZER, MD's credentials?
CLAUDIA PANZER, MD's NPI is 1538122007 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology