2026 NPPES data Ophthalmology Physician NPI 1134389463 MD
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HANS GRINAGER, MD

Ophthalmology Physician in ST LOUIS PARK, Minnesota. 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 · 356 beneficiaries · Ophthalmology Physician avg: 1K
Industry payments
$23.97
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

HANS GRINAGER, MD filed 1,723 Medicare Part D claims in 2023 as a Ophthalmology Physician in ST LOUIS PARK, Minnesota.

2K
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.

HANS GRINAGER, MD's Medicare Part D volume vs every U.S. prescriber

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

1,723 Top 17% higher than 83% 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%). This entry sits in this band. 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)

HANS GRINAGER, 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).

What does the federal data show about HANS GRINAGER, MD?

Quality data not reported

NPI registry status

Active

Issued 06/10/2008

NPI 1134389463

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,723 21% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Minnesota

How Ophthalmology Physician compares to other specialties among Minnesota providers

Minnesota providers

Ophthalmology Physician share within Minnesota

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

Specialty board-certification context

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

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

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

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

HANS GRINAGER, MD is a Ophthalmology Physician provider practicing in ST LOUIS PARK, Minnesota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1134389463. 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.

HANS GRINAGER, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 3900 PARK NICOLLET BLVD, ST LOUIS PARK, MN, 55416, with a listed phone of (952) 993-3150. NPI 1134389463 was issued on 06/10/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GRINAGER 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 1,723 prescription claims written by this provider, covering 356 Medicare beneficiaries and totaling roughly $298K 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

3900 PARK NICOLLET BLVD
ST LOUIS PARK, MN 55416

Provider Details

NPI 1134389463
Specialty Ophthalmology Physician
Credentials MD
Gender Male
NPI Issued 06/10/2008

Hospital and facility affiliations

Facilities where HANS GRINAGER, 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.

PARK NICOLLET CLINIC
MAPLE GROVE, MN

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 HANS GRINAGER, MD. Source: openpaymentsdata.cms.gov.

Total received

$24

Largest payer

Johnson & Johnson Surgical Vision, 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.

Medicare Part D Prescribing Data

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

1,723
Total Claims
$298K
Total Drug Cost
356
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
3,258
Total Day Supply
93,145
Generic Drug Cost
$45K
Antibiotic Claims
109

Patient Demographics

Average Patient Age
75.9 years
Avg HCC Risk Score
1.09
Gender Split
56% female / 44% male
Age Distribution
<65: 15, 65-74: 141, 75-84: 148, 85+: 52

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
374
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
237
Timolol Maleate
134
Brimonidine Tartrate
121
Restasis
Cyclosporine
115
Doxycycline Monohydrate
109
Moxifloxacin
Moxifloxacin Hcl
85
Prednisolone Acetate
77
Erythromycin
Erythromycin Base
75
Xiidra
Lifitegrast
55

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

Ophthalmology Physician Overview

How HANS GRINAGER, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

HANS GRINAGER, MD's 1,723 claims are above the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Minnesota

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

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

Frequently Asked Questions

What is HANS GRINAGER, MD's specialty?
HANS GRINAGER, MD specializes in Ophthalmology Physician and practices in ST LOUIS PARK, Minnesota. Credentials: MD.
How much does HANS GRINAGER, MD prescribe under Medicare Part D?
In 2023, HANS GRINAGER, MD wrote 1,723 Medicare Part D claims totaling $298K in drug costs for 356 beneficiaries.
Where is HANS GRINAGER, MD located?
HANS GRINAGER, MD is located at 3900 PARK NICOLLET BLVD, ST LOUIS PARK, MN, 55416. Phone: (952) 993-3150.
What is HANS GRINAGER, MD's NPI number?
HANS GRINAGER, MD's National Provider Identifier (NPI) is 1134389463, issued on 06/10/2008.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does HANS GRINAGER, MD prescribe most often?
Based on 2023 Medicare Part D data, HANS GRINAGER, MD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Timolol Maleate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HANS GRINAGER, MD accept Medicare?
HANS GRINAGER, MD appears in CMS Medicare data with 1,723 Part D claims and 356 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HANS GRINAGER, MD's credentials?
HANS GRINAGER, MD's NPI is 1134389463 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