2026 NPPES data Neuro-ophthalmology Physician NPI 1245853100 MD
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LEIGH RETTENMAIER, MD

Neuro-ophthalmology 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
34
Medicare Part D claims · 14 beneficiaries · Neuro-ophthalmology Physician avg: 419
Industry payments
$267.74
2 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

LEIGH RETTENMAIER, MD filed 34 Medicare Part D claims in 2023 as a Neuro-ophthalmology Physician in IOWA CITY, Iowa.

34
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.

LEIGH RETTENMAIER, MD's Medicare Part D volume vs every U.S. prescriber

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

34 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 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)

LEIGH RETTENMAIER, 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 LEIGH RETTENMAIER, MD?

Quality data not reported

NPI registry status

Active

Issued 05/26/2020

NPI 1245853100

Primary specialty

Neuro-ophthalmology Physician

Rare

128 US NPIs in this specialty

Medicare Part D claims

34 92% vs specialty avg

2023 prescription claims

Specialty avg: 419

Specialty distribution in Iowa

How Neuro-ophthalmology Physician compares to other specialties among Iowa providers

Iowa providers

Neuro-ophthalmology Physician share within Iowa

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

Specialty board-certification context

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

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

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

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

LEIGH RETTENMAIER, MD appears in the CMS NPPES registry as a Neuro-ophthalmology Physician provider holding MD credentials at 200 HAWKINS DR, IOWA CITY, IA, 52242, with a listed phone of (319) 356-3705. NPI 1245853100 was issued on 05/26/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RETTENMAIER 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 34 prescription claims written by this provider, covering 14 Medicare beneficiaries and totaling roughly $2K 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.

Neuro-ophthalmology Physician is a narrow specialty nationwide, with 128 enrolled providers across 34 states and an average of 419 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 1245853100
Specialty Neuro-ophthalmology Physician
Credentials MD
Gender Female
NPI Issued 05/26/2020

Hospital and facility affiliations

Facilities where LEIGH RETTENMAIER, 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.

STATE UNIVERSITY OF IOWA
IOWA 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 LEIGH RETTENMAIER, MD. Source: openpaymentsdata.cms.gov.

Total received

$268

Largest payer

Amgen 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.

34
Total Claims
$2K
Total Drug Cost
14
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
55
Total Day Supply
1,514
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
1.67

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Levetiracetam
11

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

Neuro-ophthalmology Physician Overview

How LEIGH RETTENMAIER, MD fits within the Neuro-ophthalmology Physician landscape nationally.

128
Neuro-ophthalmology Physician Providers in US
34
States with Neuro-ophthalmology Physician
419
Avg Claims per Provider

LEIGH RETTENMAIER, MD's 34 claims are below the specialty average of 419.

Nearby Neuro-ophthalmology Physician Providers in Iowa

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

Compare Neuro-ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LEIGH RETTENMAIER, MD's specialty?
LEIGH RETTENMAIER, MD specializes in Neuro-ophthalmology Physician and practices in IOWA CITY, Iowa. Credentials: MD.
How much does LEIGH RETTENMAIER, MD prescribe under Medicare Part D?
In 2023, LEIGH RETTENMAIER, MD wrote 34 Medicare Part D claims totaling $2K in drug costs for 14 beneficiaries.
Where is LEIGH RETTENMAIER, MD located?
LEIGH RETTENMAIER, MD is located at 200 HAWKINS DR, IOWA CITY, IA, 52242. Phone: (319) 356-3705.
What is LEIGH RETTENMAIER, MD's NPI number?
LEIGH RETTENMAIER, MD's National Provider Identifier (NPI) is 1245853100, issued on 05/26/2020.
How many Neuro-ophthalmology Physician providers are there in the US?
There are 128 Neuro-ophthalmology Physician providers across 34 states in the US. The average Neuro-ophthalmology Physician provider writes 419 Medicare Part D claims per year.
What drugs does LEIGH RETTENMAIER, MD prescribe most often?
Based on 2023 Medicare Part D data, LEIGH RETTENMAIER, MD's most frequently prescribed drugs include Levetiracetam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LEIGH RETTENMAIER, MD accept Medicare?
LEIGH RETTENMAIER, MD appears in CMS Medicare data with 34 Part D claims and 14 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LEIGH RETTENMAIER, MD's credentials?
LEIGH RETTENMAIER, MD's NPI is 1245853100 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