Doctor profile · Federal record

Dr. William Kirn, O.D.

Optometrist (CMS: Optometry) · Sanford, ME

  • NPI 1285659417
  • Accepts Medicare
  • MIPS 91.8 / 100 · 2023
  • 28 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
272 Cottage St
Sanford, ME 040731815
(207) 324-8888

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
October 29, 2020
Year of graduation
1998 — 28 yrs since
Specialty taxonomy
152W00000X — NUCC code
State license (1)
Maine #OPT818
Medicaid
ME #260530099

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1285659417. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
624
Distinct HCPCS
4
Medicare allowed
$55,282
HCPCS Description Services Patients Avg allowed
92014 Established patient complete exam of visual system 319 317 $127
92250 Photography of the retina 229 226 $37
99213 Established patient office or other outpatient visit, 20-29 minutes 58 41 $90
92083 Exam of visual field with extended testing 18 18 $63

In context: peer comparison

Among 4 peers in this city , average services per provider: 166. This provider delivers 3.8× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$138
Transactions
3
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
CooperVision Inc. 1 $91.83
Tarsus Pharmaceuticals, Inc. 1 $24.08
Bausch & Lomb Americas Inc. 1 $21.99

By nature of payment

Food and Beverage
$138

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
214
Patients
52
Total drug cost
$69,288
Drug Type Claims Patients Total cost
Latanoprost Generic 92 24 $2,846
Timolol Maleate Generic 42 13 $467
Lumigan (Bimatoprost) Brand 23 0 $14,163
Restasis (Cyclosporine) Brand 22 15 $43,291
Rhopressa (Netarsudil Mesylate) Brand 18 0 $8,202
Dorzolamide-Timolol (Dorzolamide Hcl/Timolol Maleat) Brand 17 0 $319

Frequently asked questions

Auto-generated from federal data
What is Dr. William Kirn's medical specialty?
Dr. William Kirn practices Optometrist in Sanford, ME.
Where does Dr. William Kirn practice?
Dr. William Kirn practices at 272 Cottage St, Sanford, ME 040731815. Office phone: 2073248888.
What is Dr. William Kirn's NPI?
Dr. William Kirn's National Provider Identifier (NPI) is 1285659417, issued by NPPES.
Does Dr. William Kirn accept Medicare assignment?
Yes. Dr. William Kirn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Kirn commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); Photography of the retina (HCPCS 92250); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.