2026 NPPES data Addiction Medicine (Psychiatry & Neurology) Physician NPI 1629169412 M.D.
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THOMAS PARK, M.D.

Addiction Medicine (Psychiatry & Neurology) Physician in SOUTHFIELD, Michigan. 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
6K
Medicare Part D claims · 427 beneficiaries · Addiction Medicine (Psychiatry & Neurology) Physician avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$190.19
8 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

THOMAS PARK, M.D. filed 6,165 Medicare Part D claims in 2023 as a Addiction Medicine (Psychiatry & Neurology) Physician in SOUTHFIELD, Michigan, prescribing 93% generic.

6K
Part D claims, 2023
93%
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.

THOMAS PARK, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

6,165 Top 5% higher than 95% 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. 2,000–2,200: 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)

THOMAS PARK, M.D. 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 THOMAS PARK, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/27/2006

NPI 1629169412

Primary specialty

Addiction Medicine (Psychiatry & Neurology) Physician

Niche

658 US NPIs in this specialty

Medicare Part D claims

6,165 505% vs specialty avg

2023 prescription claims

Specialty avg: 1,019

Specialty distribution in Michigan

How Addiction Medicine (Psychiatry & Neurology) Physician compares to other specialties among Michigan providers

Michigan providers

Addiction Medicine (Psychiatry & Neurology) Physician share within Michigan

1. Addiction Medicine (Psychiatry & Neurology) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Psychiatry & Neurology) Physician share within Michigan

Specialty board-certification context

Estimated specialty board-certified rate — Addiction Medicine (Psychiatry & Neurology) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Addiction Medicine (Psychiatry & Neurology) Physician ABMS/AOA estimate

Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Addiction Medicine (Psychiatry & Neurology) 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).

THOMAS PARK, M.D. appears in the CMS NPPES registry as a Addiction Medicine (Psychiatry & Neurology) Physician provider holding M.D. credentials at 23077 GREENFIELD #430, SOUTHFIELD, MI, 48075, with a listed phone of (248) 552-0044. NPI 1629169412 was issued on 09/27/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARK 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 6,165 prescription claims written by this provider, covering 427 Medicare beneficiaries and totaling roughly $1.3 million in drug spend, split 7% brand-name and 93% 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.

Addiction Medicine (Psychiatry & Neurology) Physician is a narrow specialty nationwide, with 658 enrolled providers across 49 states and an average of 1,019 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

23077 GREENFIELD #430
SOUTHFIELD, MI 48075

Provider Details

NPI 1629169412
Specialty Addiction Medicine (Psychiatry & Neurology) Physician
Credentials M.D.
Gender Male
NPI Issued 09/27/2006

Hospital and facility affiliations

Facilities where THOMAS PARK, M.D. 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.

THOMAS PARK M.D. PC
SOUTHFIELD, MI

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

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 THOMAS PARK, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$190

Largest payer

Indivior 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.

License & disciplinary context — Michigan MI-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 — they are NOT specific to THOMAS PARK, M.D.. To verify THOMAS PARK, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

THOMAS PARK, M.D. — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 6,165 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.

6,165
Total Claims
$1.3M
Total Drug Cost
427
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
9,482
Total Day Supply
276,859
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$1.1M
Generic Drug Cost
$216K

Patient Demographics

Average Patient Age
62.7 years
Avg HCC Risk Score
1.54
Gender Split
66% female / 34% male
Age Distribution
<65: 182, 65-74: 177, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What THOMAS PARK, 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
Quetiapine Fumarate
635
Trazodone Hcl
417
Bupropion Xl
Bupropion Hcl
298
Buspirone Hcl
261
Duloxetine Hcl
259
Mirtazapine
256
Clonazepam
247
Fluoxetine Hcl
202
Lamotrigine
193
Sertraline Hcl
187

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

Addiction Medicine (Psychiatry & Neurology) Physician Overview

How THOMAS PARK, M.D. fits within the Addiction Medicine (Psychiatry & Neurology) Physician landscape nationally.

658
Addiction Medicine (Psychiatry & Neurology) Physician Providers in US
49
States with Addiction Medicine (Psychiatry & Neurology) Physician
1,019
Avg Claims per Provider

THOMAS PARK, M.D.'s 6,165 claims are above the specialty average of 1,019.

Nearby Addiction Medicine (Psychiatry & Neurology) Physician Providers in Michigan

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

Compare Addiction Medicine (Psychiatry & Neurology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is THOMAS PARK, M.D.'s specialty?
THOMAS PARK, M.D. specializes in Addiction Medicine (Psychiatry & Neurology) Physician and practices in SOUTHFIELD, Michigan. Credentials: M.D..
How much does THOMAS PARK, M.D. prescribe under Medicare Part D?
In 2023, THOMAS PARK, M.D. wrote 6,165 Medicare Part D claims totaling $1.3M in drug costs for 427 beneficiaries.
Where is THOMAS PARK, M.D. located?
THOMAS PARK, M.D. is located at 23077 GREENFIELD #430, SOUTHFIELD, MI, 48075. Phone: (248) 552-0044.
What is THOMAS PARK, M.D.'s NPI number?
THOMAS PARK, M.D.'s National Provider Identifier (NPI) is 1629169412, issued on 09/27/2006.
Does THOMAS PARK, M.D. prescribe more brand-name or generic drugs?
THOMAS PARK, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $1.1M in brand drug costs.
How many Addiction Medicine (Psychiatry & Neurology) Physician providers are there in the US?
There are 658 Addiction Medicine (Psychiatry & Neurology) Physician providers across 49 states in the US. The average Addiction Medicine (Psychiatry & Neurology) Physician provider writes 1,019 Medicare Part D claims per year.
What drugs does THOMAS PARK, M.D. prescribe most often?
Based on 2023 Medicare Part D data, THOMAS PARK, M.D.'s most frequently prescribed drugs include Quetiapine Fumarate, Trazodone Hcl, Bupropion Xl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does THOMAS PARK, M.D. accept Medicare?
THOMAS PARK, M.D. appears in CMS Medicare data with 6,165 Part D claims and 427 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify THOMAS PARK, M.D.'s credentials?
THOMAS PARK, M.D.'s NPI is 1629169412 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