Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1154381515 Individual Practitioner Female Practitioner

Dr. Marlene R San Nicolas , OD

Optometrist • Tamuning, GU

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Marlene San Nicolas, OD is a certified Optometrist practicing in Tamuning, GU. With approximately 34 years of clinical experience since graduating from Pacific University - College Of Optometry in 1992, Dr. San Nicolas delivers high-quality medical care to the local community at 415 CHALAN SAN ANTONIO.

Dr. San Nicolas is affiliated with Takecare Insurance Company Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient complete exam of visual system, new patient complete exam of visual system, 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

415 Chalan San Antonio
Suite 111-113

Tamuning, GU 969133620

Telephone 6716483350
Fax 6716473546
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Pacific University - College Of Optometry

Graduation Year

1992

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Optometrist in Tamuning, GU

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
34 Yrs +5.6 yrs vs City Avg
City Avg: 28.4 Yrs
State Avg: 18.7 Yrs
Regional Practice Density
11 Specialists

Practicing in Tamuning, GU (16 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
2.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. San Nicolas (34 Years) 34 Yrs
Tamuning Specialty Average (28.4 Years) 28.4 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
92014 Established patient complete exam of visual system
128 128 $135.47 $133.43
92004 New patient complete exam of visual system
53 53 $159.20 $157.33
99213 Established patient office or other outpatient visit, typically 15 minutes
48 38 $96.45 $92.25

Medical Specialties & State Licenses

Optometrist Primary Specialty

NUCC Taxonomy Code: 152W00000X

State License GU OL027

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.

Hospital & Practice Group Affiliations

Takecare Insurance Company Inc

548 S Marine Corps Dr, Tamuning, GU 969133539

Phone: 6716465825

Practice Associates & Co-Workers

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

22 Associated Practitioners
NPI 1023079738

Doctor of Medicine (M.D.)

NPI 1114988821

Doctor of Medicine (M.D.)

Walter Stratton , PA-C

Physician Assistant

NPI 1124089867

Physician Assistant (Certified)

Dr. David Mudd , MD

Radiologic Technologist - Radiography

NPI 1134180409

Doctor of Medicine (M.D.)

NPI 1134180482

Doctor of Medicine (M.D.)

NPI 1154514412

Registered Pharmacist

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active February 27, 2013

NPI status registered as active in NPPES database

📍
Updated Practice Location February 27, 2013

Registered at 415 CHALAN SAN ANTONIO, SUITE 111-113, TAMUNING, GU 969133620 (Tel: 6716483350)

📍
Updated Business Mailing Address February 27, 2013

Registered at PO BOX 6578, TAMUNING, GU 969316578 (Tel: 6716483350)

👤
Provider Name / Credentials Updated February 27, 2013

Recorded as MARLENE SAN NICOLAS, O.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 27, 2013

Optometrist (License #OL027 in GU)

🟢
Initial NPI Registration & Enumeration March 28, 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: 1154381515
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 28, 2006
Last Update: February 27, 2013
Sole Proprietor: No

Mailing Address

Po Box 6578

Tamuning, GU 969316578

Phone: 6716483350

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.