Nestor Alejandro Sainz Rueda, MD
Family Medicine Physician · Boston, MA
Nestor Alejandro Sainz Rueda, MD is a family medicine physician with a practice address in Boston, Massachusetts, and NPI 1003444563, issued on Mar 31, 2020. Check the license (Massachusetts 1019480, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Nestor Alejandro Sainz Rueda
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 1019480 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Fruit St, Boston, MA 02114
- Phone
- (800) 711-4644
- Enumerated
- Mar 31, 2020
- Record last updated
- Aug 28, 2024
- Medicaid ID
- 118787700 FL
- Medicare enrollment
- Enrolled (PECOS I20241003000583); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 55 Fruit St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nestor Alejandro Sainz Rueda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1019480Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average family medicine physician in 2024
2,076 Medicare Part D claims for 256 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Atorvastatin Calcium177 claims
- Amlodipine Besylate97 claims
- Rosuvastatin Calcium79 claims
- Diclofenac Sodium63 claims
- Fluticasone Propionate61 claims
- Lisinopril60 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.
Industry payments in 2024: $330.72
9 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Massachusetts General Physicians Organization IncBoston, MA
- The General Hospital CorporationBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nestor Alejandro Sainz Rueda among 2,265 family medicine physician records in Massachusetts
Nestor Alejandro Sainz Rueda, MD is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 87% of them.
- NPI issued2020 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1999 · median 2006 among the 1,529 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Massachusetts
There are 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Boston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ksenia Blinnikova, MDBoston, MA 021141740646181
- Naris Ghazarians, MDBoston, MA 021141568993434
- Paul Heinzelmann, M.D.Boston, MA 021141861477283
- Masaya Higuchi, M.D.Boston, MA 021141457544892
- Aaron Hoffman, DOBoston, MA 021141245591098
- James Jackson, M.D.Boston, MA 021141285016949
- Jason Kerzer, DOBoston, MA 021141497165880
- Rebecca LeeBoston, MA 021141508388711
Common questions
What is Nestor Alejandro Sainz Rueda, MD's NPI number?
Nestor Alejandro Sainz Rueda, MD's National Provider Identifier (NPI) is 1003444563, issued on Mar 31, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Nestor Alejandro Sainz Rueda, MD located?
The NPPES record lists a practice address at 55 Fruit St, Boston, MA, 02114. Phone: (800) 711-4644. Providers update this record themselves, so call before visiting.
How can I verify Nestor Alejandro Sainz Rueda, MD's license?
NPPES lists Massachusetts license number 1019480, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nestor Alejandro Sainz Rueda, MD prescribe under Medicare Part D?
In 2024, Nestor Alejandro Sainz Rueda, MD had 2,076 Medicare Part D claims for 256 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions 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.