2026 NPPES data Internal Medicine Physician NPI 1184821506 D.O.
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Gregory Golden, D.O.

Internal Medicine Physician in Loveland, Colorado. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 172,858 in Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
3K
Medicare Part D claims · 406 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
0%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Gregory Golden, D.O. filed 2,532 Medicare Part D claims in 2023 as a Internal Medicine Physician in Loveland, Colorado, prescribing 0% generic.

3K
Part D claims, 2023
0%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Gregory Golden, D.O.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

2,532 Top 13% higher than 87% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2K+: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic, not verified)

Gregory Golden, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Gregory Golden, D.O.?

Quality data not reported

NPI registry status

Active

Issued 06/29/2007

NPI 1184821506

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

2,532 7% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Colorado

How Internal Medicine Physician compares to other specialties among Colorado providers

Colorado providers

Largest specialties in Colorado (% of in-state providers)

Behavior Technician - 7.8%Behavior Technician7.8%Mental Health Counselor - 6.2%Mental Health Counselor6.2%Physical Therapist - 4.2%Physical Therapist4.2%Clinical Social Worker - 4.2%Clinical Social Worker4.2%Professional Counselor - 3.7%Professional Counselor3.7%Registered Nurse - 3.6%Registered Nurse3.6%Internal Medicine Physician - 1.9%Internal Medicine Physician1.9%
Largest specialties in Colorado (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Internal Medicine Physician. Verify directly:

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).

Gregory Golden, D.O. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding D.O. credentials at 1900 BOISE AVE, Loveland, CO, 80538, with a listed phone of (970) 203-2120. NPI 1184821506 was issued on 06/29/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Golden 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 2,532 prescription claims written by this provider, covering 406 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 54% brand-name and 0% 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

1900 BOISE AVE
Loveland, CO 80538

Provider Details

NPI 1184821506
Specialty Internal Medicine Physician
Credentials D.O.
Gender Male
NPI Issued 06/29/2007

Hospital and facility affiliations

Facilities where Gregory Golden, D.O. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

Banner Health Physicians Colorado LLC
Greeley, CO

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Brand-heavy

Gregory Golden, D.O. - brand share 54.0%
Internal Medicine Physician average

54% brand-name claims vs 0% generic, on 2,532 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.

2,532
Total Claims
$1.3M
Total Drug Cost
406
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,757
Total Day Supply
106,164
Brand vs Generic
54% brand / 0% generic
Brand Drug Cost
$1.2M
Antibiotic Claims
373

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
1.99
Gender Split
58% female / 42% male
Age Distribution
<65: 43, 65-74: 176, 75-84: 146, 85+: 41

Top Prescribed Drugs (Medicare Part D)

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

What Gregory Golden, D.O. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Azithromycin
327
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
325
Albuterol Sulfate Hfa
Albuterol Sulfate
233
Montelukast Sodium
170
Prednisone
147
Fluticasone-Salmeterol
Fluticasone Propion/Salmeterol
137
Spiriva Respimat
Tiotropium Bromide
121
Advair Diskus
Fluticasone Propion/Salmeterol
100
Anoro Ellipta
Umeclidinium Brm/Vilanterol Tr
100
Breo Ellipta
Fluticasone/Vilanterol
77

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

Internal Medicine Physician Overview

How Gregory Golden, D.O. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Gregory Golden, D.O.'s 2,532 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Colorado

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Colorado medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Gregory Golden, D.O.'s specialty?
Gregory Golden, D.O. specializes in Internal Medicine Physician and practices in Loveland, Colorado. Credentials: D.O..
How much does Gregory Golden, D.O. prescribe under Medicare Part D?
In 2023, Gregory Golden, D.O. wrote 2,532 Medicare Part D claims totaling $1.3M in drug costs for 406 beneficiaries.
Where is Gregory Golden, D.O. located?
Gregory Golden, D.O. is located at 1900 BOISE AVE, Loveland, CO, 80538. Phone: (970) 203-2120.
What is Gregory Golden, D.O.'s NPI number?
Gregory Golden, D.O.'s National Provider Identifier (NPI) is 1184821506, issued on 06/29/2007.
Does Gregory Golden, D.O. prescribe more brand-name or generic drugs?
Gregory Golden, D.O.'s prescribing is 54% brand-name and 0% generic drugs by claim count, with $1.2M in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Gregory Golden, D.O. prescribe most often?
Based on 2023 Medicare Part D data, Gregory Golden, D.O.'s most frequently prescribed drugs include Azithromycin, Trelegy Ellipta, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Gregory Golden, D.O. accept Medicare?
Gregory Golden, D.O. appears in CMS Medicare data with 2,532 Part D claims and 406 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Gregory Golden, D.O.'s credentials?
Gregory Golden, D.O.'s NPI is 1184821506 with credentials D.O.. 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

Compiled from official public sources by the PlainDoctor editorial team.