Active NPI 1528141348 Individual Practitioner Male Practitioner

Dr. Gregory Michael Farrell , OD

Optometrist • Princeton, ME

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gregory Farrell, OD is a certified Optometrist practicing in Princeton, ME. With approximately 39 years of clinical experience since graduating from New England College Of Optometry in 1987, Dr. Farrell delivers high-quality medical care to the local community at 136 MILL ST.

Dr. Farrell is affiliated with St Croix Regional Family Health Center and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient complete exam of visual system, exam of visual field with extended testing, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

136 Mill St

Princeton, ME 046683344

Telephone 2077965033

Fax 2077965528

Associated Practice Facility / Clinic

🏢 St Croix Regional Family Health Center Facility NPI 1831174614

Medicare Profile & Education

Medical School

New England College Of Optometry

Graduation Year

1987

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Optometrist in Princeton, ME

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

39 Yrs Matches City Avg

City Avg: 39.0 Yrs

State Avg: 24.2 Yrs

Regional Practice Density

1 Specialists

Practicing in Princeton, ME (324 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

0.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Farrell (39 Years) 39 Yrs

Princeton Specialty Average (39.0 Years) 39.0 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2021)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	49	49	$120.20	$119.93

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
92014 Established patient complete exam of visual system	310	309	$120.32	$119.31
92083 Exam of visual field with extended testing	47	45	$80.00	$59.87
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	42	39	$110.00	$104.08
99213 Established patient office or other outpatient visit, typically 15 minutes	37	32	$80.00	$71.56
92004 New patient complete exam of visual system	32	32	$140.00	$139.66
92250 Photography of the retina	31	31	$72.00	$41.70
92012 Established patient problem focused exam of visual system	23	23	$90.00	$84.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
66821 Removal of recurring cataract in lens capsule using a laser	2,901	20	$1.21	$0.70
66984 Removal of cataract with insertion of lens	2,634	23	$3.54	$1.40
92014 Established patient complete exam of visual system	441	438	$123.74	$119.92
92083 Exam of visual field with extended testing	115	109	$80.00	$60.61
99213 Established patient office or other outpatient visit, typically 15 minutes	94	74	$80.00	$70.04
92250 Photography of the retina	84	84	$72.00	$47.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	65	61	$110.00	$103.80
92004 New patient complete exam of visual system	51	51	$143.43	$141.46
92012 Established patient problem focused exam of visual system	24	24	$90.00	$83.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
66984 Removal of cataract with insertion of lens	3,174	24	$3.36	$1.33
66821 Removal of recurring cataract in lens capsule using a laser	2,192	18	$1.32	$0.67
92014 Established patient complete exam of visual system	465	464	$115.15	$113.13
92250 Photography of the retina	186	184	$72.00	$52.06
92083 Exam of visual field with extended testing	155	150	$80.00	$58.78
99213 Established patient office or other outpatient visit, typically 15 minutes	131	90	$80.00	$67.74
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	87	80	$105.00	$100.19
92004 New patient complete exam of visual system	40	40	$135.00	$132.43
92133 Imaging of optic nerve	21	21	$45.00	$35.16

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
66984 Removal of cataract with insertion of lens	6,324	44	$3.41	$1.26
66821 Removal of recurring cataract in lens capsule using a laser	1,655	11	$1.15	$0.67
92014 Established patient complete exam of visual system	507	507	$117.07	$110.14
92250 Photography of the retina	180	180	$72.00	$57.74
99213 Established patient office or other outpatient visit, typically 15 minutes	141	104	$80.00	$64.98
92083 Exam of visual field with extended testing	118	112	$80.00	$56.84
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	74	67	$105.00	$95.82
92004 New patient complete exam of visual system	42	42	$135.24	$131.91
92133 Imaging of optic nerve	34	34	$45.00	$33.41
99211 Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional	19	19	$35.00	$17.86

Medical Specialties & State Licenses

CMS Verified: 2025-08-27

Optometrist Primary Specialty

NUCC Taxonomy Code: 152W00000X

State License ME OPT739

Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

151320000 (ME)

Commercial Insurance / Payer ID Aetna Us Healthcare

1042751

Commercial Insurance / Payer ID Federal Blue Cross

043000239001

Commercial Insurance / Payer ID United Health Care

000582597002

Commercial Insurance / Payer ID Palmetto Gba--Railroad

410006235 (ME)

Commercial Insurance / Payer ID Harvard Pilgrim Health

MNT287

Commercial Insurance / Payer ID Anthem Blue Cross

029141

Hospital & Practice Group Affiliations

St Croix Regional Family Health Center

136 Mill St, Princeton, ME 046683344

Phone: 2077965503

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

14 Associated Practitioners

Brandi Walston , APRNCS

Registered Nurse - Psychiatric/Mental Health, Child & Adolescent

NPI 1275518052

Dr. Christine White , MD

Psychiatry & Neurology - Psychiatry

NPI 1336124114

Doctor of Medicine (M.D.)

Anne Cassidy , LPN

Licensed Practical Nurse

NPI 1346225158

Licensed Practical Nurse

Dr. Jonathan Dudek , PhD

Psychologist - Clinical

NPI 1356687040

Doctor of Philosophy (Ph.D.)

Sally Johnson , FNP-BC

Nurse Practitioner - Family

NPI 1457336224

Family Nurse Practitioner (Board Certified)

Paulette Gillespie , LPN

Licensed Practical Nurse

NPI 1457795007

Licensed Practical Nurse

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

15 Historical Events

📍

Updated Practice Location August 27, 2025

Registered at 136 MILL ST, PRINCETON, ME 046683344 (Tel: 2077965033)

📍

Updated Business Mailing Address August 27, 2025

Registered at 136 MILL ST, PRINCETON, ME 046683344 (Tel: 2077965033)

📍

Updated Practice Location August 01, 2023

Registered at 53 TRANSALPINE RD, LINCOLN, ME 044574223 (Tel: 2075383700)

📍

Updated Business Mailing Address August 01, 2023

Registered at 529 S PATTEN RD, PATTEN, ME 047653007 (Tel: 0753837002)

✅

NPI Profile Active March 31, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location March 31, 2017

Registered at 53 TRANSALPINE ROAD, LINCOLN, ME 04457 (Tel: 2077946161)

📍

Updated Business Mailing Address March 31, 2017

Registered at PO BOX 159, LINCOLN, ME 044570159 (Tel: 2077946161)

👤

Provider Name / Credentials Updated March 31, 2017

Recorded as GREGORY FARRELL, O.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 31, 2017

Optometrist (License #OPT739 in ME)

✅

NPI Profile Active December 14, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location December 14, 2007

Registered at 53 TRANSALPINE ROAD, LINCOLN, ME 04457 (Tel: 2077946161)

📍

Updated Business Mailing Address December 14, 2007

Registered at PO BOX 159, LINCOLN, ME 044570159 (Tel: 2077946161)

👤

Provider Name / Credentials Updated December 14, 2007

Recorded as GREGORY FARRELL, O.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 14, 2007

Optometrist (License #OPT739 in ME)

🟢

Initial NPI Registration & Enumeration October 23, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1528141348

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: October 23, 2006

Last Update: August 27, 2025

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

136 Mill St

Princeton, ME 046683344

Phone: 2077965033

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.