2026 NPPES data Addiction Psychiatry Physician NPI 1992845028 MD
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JOYCE GREGORY, MD

Addiction Psychiatry Physician in HOLLAND, 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
2K
Medicare Part D claims · 87 beneficiaries · Addiction Psychiatry Physician avg: 792
Generic prescribing
96%
generic claims · 4% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JOYCE GREGORY, MD is a Addiction Psychiatry Physician ([object Object]) practicing in HOLLAND, Michigan with a Medicare Part D prescribing footprint of 2K claims across 87 beneficiaries — 4% brand-name prescribing .

What stands out: JOYCE GREGORY, MD filed 1,619 Medicare Part D claims in 2023 across HOLLAND, Michigan. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JOYCE GREGORY, MD 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).

JOYCE GREGORY, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 02/07/2007

NPI 1992845028

Primary specialty

Addiction Psychiatry Physician

Niche

667 US NPIs in this specialty

Medicare Part D claims

1,619 104% vs specialty avg

2023 prescription claims

Specialty avg: 792

Specialty distribution in Michigan

How Addiction Psychiatry Physician compares to other specialties among Michigan providers

Michigan providers

Addiction Psychiatry Physician share within Michigan

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

Specialty board-certification context

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

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

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

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

JOYCE GREGORY, MD is a Addiction Psychiatry Physician provider practicing in HOLLAND, Michigan, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1992845028. 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.

JOYCE GREGORY, MD appears in the CMS NPPES registry as a Addiction Psychiatry Physician provider holding MD credentials at 854 WASHINGTON AVE, HOLLAND, MI, 49423, with a listed phone of (616) 392-5141. NPI 1992845028 was issued on 02/07/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GREGORY 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 1,619 prescription claims written by this provider, covering 87 Medicare beneficiaries and totaling roughly $162K in drug spend, split 4% brand-name and 96% 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 Psychiatry Physician is a narrow specialty nationwide, with 667 enrolled providers across 49 states and an average of 792 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

854 WASHINGTON AVE
HOLLAND, MI 49423

Provider Details

NPI 1992845028
Specialty Addiction Psychiatry Physician
Credentials MD
Gender Female
NPI Issued 02/07/2007

Hospital and facility affiliations

Facilities where JOYCE GREGORY, MD 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.

W. A. FOOTE MEMORIAL HOSPITAL, INC.
JACKSON, 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).

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 JOYCE GREGORY, MD. To verify JOYCE GREGORY, MD'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

JOYCE GREGORY, MD — brand share 4.0%
Specialty average (est.)

4% brand-name claims vs 96% generic, on 1,619 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.

1,619
Total Claims
$162K
Total Drug Cost
87
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,818
Total Day Supply
54,167
Brand vs Generic
4% brand / 96% generic
Brand Drug Cost
$114K
Generic Drug Cost
$48K

Patient Demographics

Average Patient Age
59.6 years
Avg HCC Risk Score
1.27
Gender Split
56% female / 44% male
Age Distribution
<65: 56, 65-74: 24, 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.

Drug Claims
Gabapentin
127
Quetiapine Fumarate
107
Buspirone Hcl
89
Sertraline Hcl
84
Aripiprazole
80
Olanzapine
79
Hydroxyzine Hcl
69
Lamotrigine
62
Venlafaxine Hcl Er
Venlafaxine Hcl
60
Mirtazapine
54

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

Addiction Psychiatry Physician Overview

How JOYCE GREGORY, MD fits within the Addiction Psychiatry Physician landscape nationally.

667
Addiction Psychiatry Physician Providers in US
49
States with Addiction Psychiatry Physician
792
Avg Claims per Provider

JOYCE GREGORY, MD's 1,619 claims are above the specialty average of 792.

Nearby Addiction Psychiatry Physician Providers in Michigan

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

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

Frequently Asked Questions

What is JOYCE GREGORY, MD's specialty?
JOYCE GREGORY, MD specializes in Addiction Psychiatry Physician and practices in HOLLAND, Michigan. Credentials: MD.
How much does JOYCE GREGORY, MD prescribe under Medicare Part D?
In 2023, JOYCE GREGORY, MD wrote 1,619 Medicare Part D claims totaling $162K in drug costs for 87 beneficiaries.
Where is JOYCE GREGORY, MD located?
JOYCE GREGORY, MD is located at 854 WASHINGTON AVE, HOLLAND, MI, 49423. Phone: (616) 392-5141.
What is JOYCE GREGORY, MD's NPI number?
JOYCE GREGORY, MD's National Provider Identifier (NPI) is 1992845028, issued on 02/07/2007.
Does JOYCE GREGORY, MD prescribe more brand-name or generic drugs?
JOYCE GREGORY, MD's prescribing is 4% brand-name and 96% generic drugs by claim count, with $114K in brand drug costs.
How many Addiction Psychiatry Physician providers are there in the US?
There are 667 Addiction Psychiatry Physician providers across 49 states in the US. The average Addiction Psychiatry Physician provider writes 792 Medicare Part D claims per year.
What drugs does JOYCE GREGORY, MD prescribe most often?
Based on 2023 Medicare Part D data, JOYCE GREGORY, MD's most frequently prescribed drugs include Gabapentin, Quetiapine Fumarate, Buspirone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOYCE GREGORY, MD accept Medicare?
JOYCE GREGORY, MD appears in CMS Medicare data with 1,619 Part D claims and 87 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOYCE GREGORY, MD's credentials?
JOYCE GREGORY, MD's NPI is 1992845028 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