Sandy Tan, MSN, FNP
Family Nurse Practitioner · Sudbury, MA
Sandy Tan, MSN, FNP is a family nurse practitioner with a practice address in Sudbury, Massachusetts, and NPI 1659619708, issued on Jan 24, 2013. Check the license (Massachusetts RN277143, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sandy Tan
- Credential
- MSN, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- RN277143 MA
Self-reported in NPPES; status is on the state search - Practice location
- 501 Boston Post RD, Sudbury, MA 01776
- Phone
- (978) 443-7141
- Enumerated
- Jan 24, 2013
- Record last updated
- Jan 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130402000381); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 501 Boston Post RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lindy BlanchflowerPharmacist1356945414
- Hayley Deangelis, NPFamily Nurse Practitioner1326595240
- Karen Fisher, FNP-BCFamily Nurse Practitioner1750082095
- Spiro KanellosPharmacist1457956443
- Amanda RileyFamily Nurse Practitioner1609252667
- Marilyn Seuffert, NPFamily Nurse Practitioner1609924356
Verify Sandy Tan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license RN277143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average family nurse practitioner in 2024
407 Medicare Part D claims for 86 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium126 claims
- Eliquis34 claims
- Rosuvastatin Calcium26 claims
- Donepezil Hcl25 claims
- Cilostazol24 claims
- Lamotrigine18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 84.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Pratt Neurology Associates IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
9 family nurse practitioner records list a practice address in Sudbury
They are 9 of the 281 NPPES records with a practice address in Sudbury, and 4,724 family nurse practitioner records in Massachusetts.
All 9 in Sudbury → All 4,724 in Massachusetts → Every provider in Sudbury →
Other family nurse practitioner records in Massachusetts
- Christina Abate, N.P.Boston, MA1235414970
- Katelynne Abbott, NPDanvers, MA1932355880
- Georgette Abboud, FNP-CHanscom Afb, MA1538593686
- Irfana Abdulhameed, FNPNorthborough, MA1417661786
- Christina Abouleish, NPNorwell, MA1700515772
- Christine Abraham, NPSouthborough, MA1215774658
- Catherine Abrams, FNP-CNorth Dartmouth, MA1528790599
- Wendy Abrams, FNPBoston, MA1962557801
- Michelle Abreu, FNP-BCArlington, MA1346138914
- Karolyn Abreu Blanco, FNP-BCLawrence, MA1043007644
Common questions
What is Sandy Tan, MSN, FNP's NPI number?
Sandy Tan, MSN, FNP's National Provider Identifier (NPI) is 1659619708, issued on Jan 24, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Sandy Tan, MSN, FNP located?
The NPPES record lists a practice address at 501 Boston Post RD, Sudbury, MA, 01776. Phone: (978) 443-7141. Providers update this record themselves, so call before visiting.
How can I verify Sandy Tan, MSN, FNP's license?
NPPES lists Massachusetts license number RN277143, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Sandy Tan, MSN, FNP prescribe under Medicare Part D?
In 2024, Sandy Tan, MSN, FNP had 407 Medicare Part D claims for 86 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Sandy Tan, MSN, FNP's MIPS final score?
The 2023 MIPS final score is 84.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.