2026 NPPES data Psychiatry Physician NPI 1326004797 M.D.
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STEPHEN POPKIN, M.D.

Psychiatry 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
1K
Medicare Part D claims · 77 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$801.18
31 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

STEPHEN POPKIN, M.D. filed 1,288 Medicare Part D claims in 2023 as a Psychiatry Physician in DENVER, Colorado, prescribing 87% generic.

1K
Part D claims, 2023
87%
generic prescribing
$801.18
industry payments (Sunshine Act)

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.

STEPHEN POPKIN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,288 Top 22% higher than 78% 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%). This entry sits in this band. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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-eligible specialty (heuristic — not verified)

STEPHEN POPKIN, M.D. 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).

What does the federal data show about STEPHEN POPKIN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/25/2006

NPI 1326004797

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

1,288 24% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Colorado

How Psychiatry Physician compares to other specialties among Colorado providers

Colorado providers

Psychiatry Physician share within Colorado

1. Psychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatry Physician share within Colorado

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Psychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatry 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).

STEPHEN POPKIN, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 425 S CHERRY ST, DENVER, CO, 80246, with a listed phone of (303) 759-3215. NPI 1326004797 was issued on 04/25/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what POPKIN 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 1,288 prescription claims written by this provider, covering 77 Medicare beneficiaries and totaling roughly $185K in drug spend, split 13% brand-name and 87% 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.

Psychiatry Physician is a high-volume specialty nationwide, with 53,104 enrolled providers across 56 states and an average of 1,038 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

425 S CHERRY ST
DENVER, CO 80246

Provider Details

NPI 1326004797
Specialty Psychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 04/25/2006

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 STEPHEN POPKIN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$801

Largest payer

Alkermes, 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 · Typical

STEPHEN POPKIN, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 1,288 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.

1,288
Total Claims
$185K
Total Drug Cost
77
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,276
Total Day Supply
67,653
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$121K
Generic Drug Cost
$65K

Patient Demographics

Average Patient Age
69.8 years
Avg HCC Risk Score
1.05
Gender Split
64% female / 36% male

Top Prescribed Drugs (Medicare Part D)

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

What STEPHEN POPKIN, M.D. 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
Alprazolam
119
Quetiapine Fumarate
83
Lorazepam
68
Clonazepam
64
Lamotrigine
51
Methylphenidate Hcl
38
Temazepam
38
Trintellix
Vortioxetine Hydrobromide
38
Bupropion Xl
Bupropion Hcl
37
Diazepam
36

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

Psychiatry Physician Overview

How STEPHEN POPKIN, M.D. fits within the Psychiatry Physician landscape nationally.

53,104
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider

STEPHEN POPKIN, M.D.'s 1,288 claims are above the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Colorado

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

Compare Psychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEPHEN POPKIN, M.D.'s specialty?
STEPHEN POPKIN, M.D. specializes in Psychiatry Physician and practices in DENVER, Colorado. Credentials: M.D..
How much does STEPHEN POPKIN, M.D. prescribe under Medicare Part D?
In 2023, STEPHEN POPKIN, M.D. wrote 1,288 Medicare Part D claims totaling $185K in drug costs for 77 beneficiaries.
Where is STEPHEN POPKIN, M.D. located?
STEPHEN POPKIN, M.D. is located at 425 S CHERRY ST, DENVER, CO, 80246. Phone: (303) 759-3215.
What is STEPHEN POPKIN, M.D.'s NPI number?
STEPHEN POPKIN, M.D.'s National Provider Identifier (NPI) is 1326004797, issued on 04/25/2006.
Does STEPHEN POPKIN, M.D. prescribe more brand-name or generic drugs?
STEPHEN POPKIN, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $121K in brand drug costs.
How many Psychiatry Physician providers are there in the US?
There are 53,104 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does STEPHEN POPKIN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN POPKIN, M.D.'s most frequently prescribed drugs include Alprazolam, Quetiapine Fumarate, Lorazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN POPKIN, M.D. accept Medicare?
STEPHEN POPKIN, M.D. appears in CMS Medicare data with 1,288 Part D claims and 77 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN POPKIN, M.D.'s credentials?
STEPHEN POPKIN, M.D.'s NPI is 1326004797 with credentials M.D.. 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