Marlene R. San Nicolas, O.D.
Optometrist · Tamuning, GU
Marlene R. San Nicolas, O.D. is an optometrist with a practice address in Tamuning, Guam, and NPI 1154381515, issued on Mar 28, 2006. Check the license (Guam OL027, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marlene R. San Nicolas
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License number
- OL027 GU
Self-reported in NPPES; status is on the state search - Practice location
- 415 Chalan San Antonio, Tamuning, GU 96913
- Phone
- (671) 648-3350
- Enumerated
- Mar 28, 2006
- Record last updated
- Feb 27, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (671) 647-3546
- Medicare enrollment
- Enrolled (PECOS I20040507000097); accepts Medicare assignment
- Medical or professional school
- Pacific University - College Of Optometry, 1992
- Entity
- Type 1 · individual
Also registered at 415 Chalan San Antonio
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gregory Burton, MDOphthalmology Physician1003884297
- Eyal Margalit, MD, PHDOphthalmology Physician1366491268
- James McDarby, MDOphthalmology Physician1033297403
- Collette Supit, D.D.S.Dentist1427475300
- Tom Veloria, D.M.D.General Practice Dentistry1821329285
Verify Marlene R. San Nicolas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license OL027Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Takecare Insurance Company IncTamuning, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
11 optometrist records list a practice address in Tamuning
They are 11 of the 411 NPPES records with a practice address in Tamuning, and 16 optometrist records in Guam.
All 11 in Tamuning → All 16 in Guam → Every provider in Tamuning →
Other optometrist records in Guam
- Margie Agahan, O.D.Tamuning, GU1902097652
- Julian Archer, O.D.Tamuning, GU1558519363
- Gregory Brammer, O.D.Yona, GU1720073927
- James Christian, O.D.Tamuning, GU1770539645
- Joel Dizon, O.D.Tamuning, GU1124383484
- Dante GarciaTamuning, GU1679634810
- Maria Henny Garcia, O.D.Tamuning, GU1629310875
- Brent Hume, ODAgana Heights, GU1679003420
- Cuong Huynh, ODTamuning, GU1265557490
- John Kim, ODTamuning, GU1093702615
Common questions
What is Marlene R. San Nicolas, O.D.'s NPI number?
Marlene R. San Nicolas, O.D.'s National Provider Identifier (NPI) is 1154381515, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marlene R. San Nicolas, O.D. located?
The NPPES record lists a practice address at 415 Chalan San Antonio, Tamuning, GU, 96913. Phone: (671) 648-3350. Providers update this record themselves, so call before visiting.
How can I verify Marlene R. San Nicolas, O.D.'s license?
NPPES lists Guam license number OL027, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.