2026 NPPES data Psychiatry Physician NPI 1184248841 DO
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JACOB GROEN, DO

Psychiatry Physician in IOWA CITY, Iowa. 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 · 82 beneficiaries · Psychiatry Physician avg: 1K

What the federal data shows

JACOB GROEN, DO filed 1,112 Medicare Part D claims in 2023 as a Psychiatry Physician in IOWA CITY, Iowa.

1K
Part D claims, 2023
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.

JACOB GROEN, DO's Medicare Part D volume vs every U.S. prescriber

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

1,112 Top 23% higher than 77% 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%). This entry sits in this band. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 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 certification likely (heuristic — not verified)

JACOB GROEN, DO 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 JACOB GROEN, DO?

Quality data not reported

NPI registry status

Active

Issued 05/29/2020

NPI 1184248841

Primary specialty

Psychiatry Physician

High-volume

53,104 US NPIs in this specialty

Medicare Part D claims

1,112 7% vs specialty avg

2023 prescription claims

Specialty avg: 1,038

Specialty distribution in Iowa

How Psychiatry Physician compares to other specialties among Iowa providers

Iowa providers

Psychiatry Physician share within Iowa

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

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).

JACOB GROEN, DO is a Psychiatry Physician provider practicing in IOWA CITY, Iowa, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1184248841. 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.

JACOB GROEN, DO appears in the CMS NPPES registry as a Psychiatry Physician provider holding DO credentials at 200 HAWKINS DR, IOWA CITY, IA, 52242, with a listed phone of (319) 384-7222. NPI 1184248841 was issued on 05/29/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GROEN 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 1,112 prescription claims written by this provider, covering 82 Medicare beneficiaries and totaling roughly $41K in drug spend. 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

200 HAWKINS DR
IOWA CITY, IA 52242

Provider Details

NPI 1184248841
Specialty Psychiatry Physician
Credentials DO
Gender Male
NPI Issued 05/29/2020

Hospital and facility affiliations

Facilities where JACOB GROEN, DO 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.

YAKIMA VALLEY MEMORIAL PHYSICIANS
YAKIMA, WA

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

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,112
Total Claims
$41K
Total Drug Cost
82
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,370
Total Day Supply
30,869
Generic Drug Cost
$20K

Patient Demographics

Average Patient Age
61.0 years
Avg HCC Risk Score
1.58
Gender Split
62% female / 38% male
Age Distribution
<65: 37, 65-74: 30, 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
Duloxetine Hcl
101
Metformin Hcl
73
Atorvastatin Calcium
72
Trazodone Hcl
60
Clozapine
53
Pantoprazole Sodium
52
Divalproex Sodium Er
Divalproex Sodium
48
Glimepiride
48
Sulfasalazine
48
Venlafaxine Hcl Er
Venlafaxine Hcl
37

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

Psychiatry Physician Overview

How JACOB GROEN, DO 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

JACOB GROEN, DO's 1,112 claims are above the specialty average of 1,038.

Nearby Psychiatry Physician Providers in Iowa

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

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

Frequently Asked Questions

What is JACOB GROEN, DO's specialty?
JACOB GROEN, DO specializes in Psychiatry Physician and practices in IOWA CITY, Iowa. Credentials: DO.
How much does JACOB GROEN, DO prescribe under Medicare Part D?
In 2023, JACOB GROEN, DO wrote 1,112 Medicare Part D claims totaling $41K in drug costs for 82 beneficiaries.
Where is JACOB GROEN, DO located?
JACOB GROEN, DO is located at 200 HAWKINS DR, IOWA CITY, IA, 52242. Phone: (319) 384-7222.
What is JACOB GROEN, DO's NPI number?
JACOB GROEN, DO's National Provider Identifier (NPI) is 1184248841, issued on 05/29/2020.
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 JACOB GROEN, DO prescribe most often?
Based on 2023 Medicare Part D data, JACOB GROEN, DO's most frequently prescribed drugs include Duloxetine Hcl, Metformin Hcl, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JACOB GROEN, DO accept Medicare?
JACOB GROEN, DO appears in CMS Medicare data with 1,112 Part D claims and 82 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JACOB GROEN, DO's credentials?
JACOB GROEN, DO's NPI is 1184248841 with credentials DO. 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