2026 NPPES data Optometrist NPI 1255998308 O.D.
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CHRISTOPHER AMBROSE, O.D.

Optometrist in EVANSVILLE, Indiana. 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 · 274 beneficiaries · Optometrist avg: 257
Generic prescribing
46%
generic claims · 54% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
82.4592/100
▼ 1 pts below national avg 83.1 · [object Object]
Industry payments
$1.4K
46 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CHRISTOPHER AMBROSE, O.D. is a Optometrist ([object Object]) practicing in EVANSVILLE, Indiana with a Medicare Part D prescribing footprint of 1K claims across 274 beneficiaries — 54% brand-name prescribing . Their CMS MIPS Final Score of 82.4592/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $1.4K across 46 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CHRISTOPHER AMBROSE, O.D. reported a CMS MIPS final score of 82.4592 out of 100, below the 83.1 national average, and filed 1,252 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

CHRISTOPHER AMBROSE, O.D. at a glance

Near national average

NPI registry status

Active

Issued 05/23/2019

NPI 1255998308

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

1,252 387% vs specialty avg

2023 prescription claims

Specialty avg: 257

MIPS final score

82.4592/100 0.6407999999999987% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Indiana

How Optometrist compares to other specialties among Indiana providers

Indiana providers

Optometrist share within Indiana

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

Medicare quality performance — MIPS

CHRISTOPHER AMBROSE, O.D.'s 2023 MIPS final score plotted against the Optometrist national average

Near national average
MIPS Final Score
82.4592/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Optometrist) — 82.4592/100 vs national avg 83.1

0%100%National avg83%82.5%
MIPS final score (Optometrist) — 82.4592/100 vs national avg 83.1

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).

CHRISTOPHER AMBROSE, O.D. is a Optometrist provider practicing in EVANSVILLE, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: O.D.. NPI: 1255998308. 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.

CHRISTOPHER AMBROSE, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 101 NW 1ST ST STE 112, EVANSVILLE, IN, 47708, with a listed phone of (812) 426-2020. NPI 1255998308 was issued on 05/23/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AMBROSE 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 1,252 prescription claims written by this provider, covering 274 Medicare beneficiaries and totaling roughly $841K in drug spend, split 54% brand-name and 46% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 82.4592/100 for the 2023 performance year (Quality 100, Cost 41.5307), compared with the national average of 83.1.

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

101 NW 1ST ST STE 112
EVANSVILLE, IN 47708

Provider Details

NPI 1255998308
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 05/23/2019

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

82.4592
Final Score
Avg: 83.1
100
Quality
41.5307
Cost

Reporting: Group practice

Hospital and facility affiliations

Facilities where CHRISTOPHER AMBROSE, O.D. 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.

EYECARE CONSULTANTS LLP
EVANSVILLE, IN

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 CHRISTOPHER AMBROSE, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.4K

Largest payer

Bausch & Lomb Americas 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.

Brand vs generic prescribing mix · Brand-heavy

CHRISTOPHER AMBROSE, O.D. — brand share 54.0%
Specialty average (est.)

54% brand-name claims vs 46% generic, on 1,252 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.

1,252
Total Claims
$841K
Total Drug Cost
274
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,892
Total Day Supply
51,554
Brand vs Generic
54% brand / 46% generic
Brand Drug Cost
$826K
Generic Drug Cost
$15K

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
1.21
Gender Split
59% female / 41% male
Age Distribution
<65: 20, 65-74: 133, 75-84: 90, 85+: 31

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
240
Prednisolone Acetate
122
Lumigan
Bimatoprost
114
Rocklatan
Netarsudil Mesylat/Latanoprost
101
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
78
Brimonidine Tartrate
68
Rhopressa
Netarsudil Mesylate
59
Dorzolamide Hcl
56
Timolol Maleate
45
Combigan
Brimonidine Tartrate/Timolol
42

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

Optometrist Overview

How CHRISTOPHER AMBROSE, O.D. fits within the Optometrist landscape nationally.

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

CHRISTOPHER AMBROSE, O.D.'s 1,252 claims are above the specialty average of 257.

Nearby Optometrist Providers in Indiana

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

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

Frequently Asked Questions

What is CHRISTOPHER AMBROSE, O.D.'s specialty?
CHRISTOPHER AMBROSE, O.D. specializes in Optometrist and practices in EVANSVILLE, Indiana. Credentials: O.D..
How much does CHRISTOPHER AMBROSE, O.D. prescribe under Medicare Part D?
In 2023, CHRISTOPHER AMBROSE, O.D. wrote 1,252 Medicare Part D claims totaling $841K in drug costs for 274 beneficiaries.
What is CHRISTOPHER AMBROSE, O.D.'s Medicare quality score?
CHRISTOPHER AMBROSE, O.D. has a CMS MIPS Final Score of 82.4592/100 (Quality: 100, Cost: 41.5307). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is CHRISTOPHER AMBROSE, O.D. located?
CHRISTOPHER AMBROSE, O.D. is located at 101 NW 1ST ST STE 112, EVANSVILLE, IN, 47708. Phone: (812) 426-2020.
What is CHRISTOPHER AMBROSE, O.D.'s NPI number?
CHRISTOPHER AMBROSE, O.D.'s National Provider Identifier (NPI) is 1255998308, issued on 05/23/2019.
Does CHRISTOPHER AMBROSE, O.D. prescribe more brand-name or generic drugs?
CHRISTOPHER AMBROSE, O.D.'s prescribing is 54% brand-name and 46% generic drugs by claim count, with $826K 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 CHRISTOPHER AMBROSE, O.D. prescribe most often?
Based on 2023 Medicare Part D data, CHRISTOPHER AMBROSE, O.D.'s most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Lumigan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHRISTOPHER AMBROSE, O.D. accept Medicare?
CHRISTOPHER AMBROSE, O.D. appears in CMS Medicare data with 1,252 Part D claims and 274 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHRISTOPHER AMBROSE, O.D.'s credentials?
CHRISTOPHER AMBROSE, O.D.'s NPI is 1255998308 with credentials O.D.. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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