2026 NPPES data Optometrist NPI 1124400395 OD
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ALEXANDER PERMANN, OD

Optometrist in CHAMBERLAIN, South Dakota. 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
226
Medicare Part D claims · 66 beneficiaries · Optometrist avg: 257
Generic prescribing
65%
generic claims · 35% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: ALEXANDER PERMANN, OD is a Optometrist ([object Object]) practicing in CHAMBERLAIN, South Dakota with a Medicare Part D prescribing footprint of 226 claims across 66 beneficiaries — 35% brand-name prescribing .

What stands out: ALEXANDER PERMANN, OD filed 226 Medicare Part D claims in 2023 across CHAMBERLAIN, South Dakota. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ALEXANDER PERMANN, OD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/24/2015

NPI 1124400395

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

226 12% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in South Dakota

How Optometrist compares to other specialties among South Dakota providers

South Dakota providers

Optometrist share within South Dakota

1. Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Optometrist share within South Dakota

Specialty board-certification context

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

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

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

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

ALEXANDER PERMANN, OD is a Optometrist provider practicing in CHAMBERLAIN, South Dakota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: OD. NPI: 1124400395. 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.

ALEXANDER PERMANN, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 103 E LAWLER AVE, CHAMBERLAIN, SD, 57325, with a listed phone of (605) 734-5613. NPI 1124400395 was issued on 06/24/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PERMANN 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 226 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $36K in drug spend, split 35% brand-name and 65% generic by claim count. 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.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 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

103 E LAWLER AVE
CHAMBERLAIN, SD 57325

Provider Details

NPI 1124400395
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 06/24/2015

Hospital and facility affiliations

Facilities where ALEXANDER PERMANN, OD 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.

MERIDIAN EYE CARE PC
YANKTON, SD

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

Brand vs generic prescribing mix · Above average

ALEXANDER PERMANN, OD — brand share 35.0%
Specialty average (est.)

35% brand-name claims vs 65% generic, on 226 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.

226
Total Claims
$36K
Total Drug Cost
66
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
290
Total Day Supply
7,378
Brand vs Generic
35% brand / 65% generic
Brand Drug Cost
$33K
Generic Drug Cost
$4K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.09
Gender Split
45% female / 55% male

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
77
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
32
Brimonidine Tartrate
16
Loteprednol Etabonate
12
Lotemax Sm
Loteprednol Etabonate
11
Restasis
Cyclosporine
11

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

Optometrist Overview

How ALEXANDER PERMANN, OD fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

ALEXANDER PERMANN, OD's 226 claims are below the specialty average of 257.

Nearby Optometrist Providers in South Dakota

Other clinicians with the same primary specialty enrolled in South Dakota, drawn from the same CMS NPPES roster as PERMANN.

Compare Optometrist nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALEXANDER PERMANN, OD's specialty?
ALEXANDER PERMANN, OD specializes in Optometrist and practices in CHAMBERLAIN, South Dakota. Credentials: OD.
How much does ALEXANDER PERMANN, OD prescribe under Medicare Part D?
In 2023, ALEXANDER PERMANN, OD wrote 226 Medicare Part D claims totaling $36K in drug costs for 66 beneficiaries.
Where is ALEXANDER PERMANN, OD located?
ALEXANDER PERMANN, OD is located at 103 E LAWLER AVE, CHAMBERLAIN, SD, 57325. Phone: (605) 734-5613.
What is ALEXANDER PERMANN, OD's NPI number?
ALEXANDER PERMANN, OD's National Provider Identifier (NPI) is 1124400395, issued on 06/24/2015.
Does ALEXANDER PERMANN, OD prescribe more brand-name or generic drugs?
ALEXANDER PERMANN, OD's prescribing is 35% brand-name and 65% generic drugs by claim count, with $33K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does ALEXANDER PERMANN, OD prescribe most often?
Based on 2023 Medicare Part D data, ALEXANDER PERMANN, OD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALEXANDER PERMANN, OD accept Medicare?
ALEXANDER PERMANN, OD appears in CMS Medicare data with 226 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALEXANDER PERMANN, OD's credentials?
ALEXANDER PERMANN, OD's NPI is 1124400395 with credentials OD. 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