NPI registry status
Active
2026 NPPES data Obstetrics Physician NPI 1922219666 MD
Verify on CMS → Jack Parks, MD
Obstetrics Physician in Muskegon, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,396 in Obstetrics 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
176
Medicare Part D claims · 49 beneficiaries · Obstetrics Physician avg: 319
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$268.66
10 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Jack Parks, MD filed 176 Medicare Part D claims in 2023 as a Obstetrics Physician in Muskegon, Michigan, prescribing 85% generic.
- 176
- Part D claims, 2023
- 85%
- 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.
Jack Parks, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
176 35th percentile higher than 35% of 1,370,886 prescribers
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)
Jack Parks, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 5 hospital affiliations - 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 Jack Parks, MD?
Quality data not reportedPrimary specialty
Obstetrics Physician
Medicare Part D claims
176 45% vs specialty avg
Specialty distribution in Michigan
How Obstetrics Physician compares to other specialties among Michigan 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 Obstetrics Physician. Verify directly:
How MIPS and board certification work
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).
Jack Parks, MD appears in the CMS NPPES registry as an Obstetrics Physician provider holding MD credentials at 1675 LEAHY ST, Muskegon, MI, 49442, with a listed phone of (231) 672-3300. NPI 1922219666 was issued on 05/24/2007.
Medicare Part D records for calendar year 2023 show 176 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $15K in drug spend, split 15% brand-name and 85% generic by claim count.
Obstetrics Physician is a narrow specialty nationwide, with 1,396 enrolled providers across 54 states and an average of 319 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
Provider Details
| NPI | 1922219666 |
|---|---|
| Specialty | Obstetrics Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 05/24/2007 |
Hospital and facility affiliations
Facilities where Jack Parks, 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.
According to CMS billing records, Jack Parks, MD is affiliated with 5 Medicare-billing facilities.
Ascension Medical Group Promed
Kalamazoo, MI
Lakeshore Community Hospital Inc
Shelby, MI
Mercy Health Partners
Shelby, MI
Mercy Health Partners-Obstetrics And Gynecology Specialist
Muskegon, MI
Mercy Women's Health Services
Muskegon, 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 Jack Parks, MD. Source: openpaymentsdata.cms.gov.
Total received
$269
Largest payer
Aspira Women's Health 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 Jack Parks, MD. To verify Jack Parks, 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 · Typical
Jack Parks, MD - brand share 15.0%
Obstetrics Physician average
15% brand-name claims vs 85% generic, on 176 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.
176
Total Claims
$15K
Total Drug Cost
49
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 214
- Total Day Supply
- 5,199
- Brand vs Generic
- 15% brand / 85% generic
- Brand Drug Cost
- $11K
- Generic Drug Cost
- $4K
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 67.3 years
- Avg HCC Risk Score
- 1.27
- Gender Split
- 100% female / 0% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Jack Parks, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Alendronate Sodium
Alendronate Sodium
17 claims
- Clobetasol Propion…
Clobetasol Propionate
14 claims
- Famciclovir
Famciclovir
12 claims
- Fluconazole
Fluconazole
12 claims
- Lansoprazole
Lansoprazole
12 claims
- Lisinopril
Lisinopril
12 claims
- Myrbetriq
Myrbetriq
11 claims
| Drug | Claims |
|---|---|
| Alendronate Sodium | 17 |
| Clobetasol Propionate | 14 |
| Famciclovir | 12 |
| Fluconazole | 12 |
| Lansoprazole | 12 |
| Lisinopril | 12 |
| Myrbetriq Mirabegron | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Obstetrics Physician Overview
How Jack Parks, MD fits within the Obstetrics Physician landscape nationally.
1,396
Obstetrics Physician Providers in US
54
States with Obstetrics Physician
319
Avg Claims per Provider
Jack Parks, MD's 176 claims are below the specialty average of 319.
Nearby Obstetrics Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Parks.
Dr. Ahmed Abdullah
MD
Flint, MI
Kelly Aguilera
Freeland, MI
Dr. Todd Allen
MD
Dearborn, MI
Dr. Fadia Altairy
M.D.
Detroit, MI
Dr. Ramona Andrei
MD
Detroit, MI
Compare Obstetrics 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 Michigan medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Obstetrics 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Michigan
Frequently Asked Questions
What is Jack Parks, MD's specialty? ▼
Jack Parks, MD specializes in Obstetrics Physician and practices in Muskegon, Michigan. Credentials: MD.
How much does Jack Parks, MD prescribe under Medicare Part D? ▼
In 2023, Jack Parks, MD wrote 176 Medicare Part D claims totaling $15K in drug costs for 49 beneficiaries.
Where is Jack Parks, MD located? ▼
Jack Parks, MD is located at 1675 LEAHY ST, Muskegon, MI, 49442. Phone: (231) 672-3300.
What is Jack Parks, MD's NPI number? ▼
Jack Parks, MD's National Provider Identifier (NPI) is 1922219666, issued on 05/24/2007.
Does Jack Parks, MD prescribe more brand-name or generic drugs? ▼
Jack Parks, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $11K in brand drug costs.
How many Obstetrics Physician providers are there in the US? ▼
There are 1,396 Obstetrics Physician providers across 54 states in the US. The average Obstetrics Physician provider writes 319 Medicare Part D claims per year.
What drugs does Jack Parks, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Jack Parks, MD's most frequently prescribed drugs include Alendronate Sodium, Clobetasol Propionate, Famciclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Jack Parks, MD accept Medicare? ▼
Jack Parks, MD appears in CMS Medicare data with 176 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Jack Parks, MD's credentials? ▼
Jack Parks, MD's NPI is 1922219666 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
View source datasets and methodology notes
- 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.