NPI registry status
Active
2026 NPPES data Pain Medicine (Physical Medicine & Rehabilitation) Physician NPI 1952380750 D.O.
Verify on CMS → Garry Clark, D.O.
Pain Medicine (Physical Medicine & Rehabilitation) Physician in Sioux City, Iowa.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,630 in Pain Medicine (Physical Medicine & Rehabilitation) 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.
Industry payments
$31.4K
13 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Garry Clark, D.O. is a Pain Medicine (Physical Medicine & Rehabilitation) Physician in Sioux City, Iowa, listed in the federal CMS National Provider Identifier registry.
- Likely
- board-certified (heuristic)
- #289
- Pain Medicine (Physical Medicine & Rehabilitation) Physician rank among Iowa specialties
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.
Federal trust snapshot
What official records show about Garry Clark, D.O.
Federal registry listing with board-eligibility signals — verify credentials with the state medical board before clinical decisions.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1952380750), first enumerated 01/11/2006.
Source: CMS NPPES
- Not in federal data
Medicare Part D participation
No 2023 Medicare Part D prescribing volume appears in the CMS public file for this NPI (may reflect specialty, new enrollment, or non-prescribing role).
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$31.4K in reported industry payments (13 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1952380750 · Pain Medicine (Physical Medicine & Rehabilitation) Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-NONE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1952380750
- ENUM-LEGACY 2006
- TAX-NARROW 1,630
- RX-NONE No Part D
- BOOK-THIN 4 in Iowa
- PHOTO-ENUM Paul Smucker · 2006
✓
Board certification likely (heuristic, not verified)
Garry Clark, 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 Garry Clark, D.O.?
Quality data not reportedPrimary specialty
Pain Medicine (Physical Medicine & Rehabilitation) Physician
Specialty distribution in Iowa
How Pain Medicine (Physical Medicine & Rehabilitation) Physician compares to other specialties among Iowa 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 Pain Medicine (Physical Medicine & Rehabilitation) 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).
Practice Address
Provider Details
| NPI | 1952380750 |
|---|---|
| Specialty | Pain Medicine (Physical Medicine & Rehabilitation) Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 01/11/2006 |
Hospital and facility affiliations
Facilities where Garry Clark, 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.
Multi Care Physicians Group PC
Sioux City, IA
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 Garry Clark, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$31.4K
Largest payer
Takeda Pharmaceuticals U.S.A., Inc.
Most common payment type
Consulting Fee
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.
More Pain Medicine (Physical Medicine & Rehabilitation) Physician in IA →
All providers in Iowa →
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Pain Medicine (Physical Medicine & Rehabilitation) Physician Overview
How Garry Clark, D.O. fits within the Pain Medicine (Physical Medicine & Rehabilitation) Physician landscape nationally.
1,630
Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in US
50
States with Pain Medicine (Physical Medicine & Rehabilitation) Physician
1,401
Avg Claims per Provider
Nationwide Pain Medicine (Physical Medicine & Rehabilitation) Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Clark, both outside Iowa so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in Iowa
Other clinicians with the same primary specialty enrolled in Iowa, drawn from the same CMS NPPES roster as Clark.
One of 4 Pain Medicine (Physical Medicine & Rehabilitation) Physician providers enrolled in Iowa, 3 are shown here.
Frequently Asked Questions
What is Garry Clark, D.O.'s specialty? ▼
Garry Clark, D.O. specializes in Pain Medicine (Physical Medicine & Rehabilitation) Physician and practices in Sioux City, Iowa. Credentials: D.O..
Where is Garry Clark, D.O. located? ▼
Garry Clark, D.O. is located at 3930 STADIUM DR, Sioux City, IA, 51106. Phone: (712) 276-4325.
What is Garry Clark, D.O.'s NPI number? ▼
Garry Clark, D.O.'s National Provider Identifier (NPI) is 1952380750, issued on 01/11/2006.
How many Pain Medicine (Physical Medicine & Rehabilitation) Physician providers are there in the US? ▼
There are 1,630 Pain Medicine (Physical Medicine & Rehabilitation) Physician providers across 50 states in the US. The average Pain Medicine (Physical Medicine & Rehabilitation) Physician provider writes 1,401 Medicare Part D claims per year.
Does Garry Clark, D.O. accept Medicare? ▼
Garry Clark, D.O. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Garry Clark, D.O.'s credentials? ▼
Garry Clark, D.O.'s NPI is 1952380750 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
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.
- 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
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.