Sidney Spragins Rehn, MD
Pediatrics Physician · Boston, MA
Sidney Spragins Rehn, MD is a pediatrics physician with a practice address in Boston, Massachusetts, and NPI 1023756616, issued on May 24, 2022. Check the license (Massachusetts 1022467, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Sidney Spragins Rehn
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 1022467 MA
Self-reported in NPPES; status is on the state search - Practice location
- 75 Francis St, Boston, MA 02115
- Phone
- (617) 732-5500
- Enumerated
- May 24, 2022
- Record last updated
- Mar 28, 2026
- Medicare enrollment
- Enrolled (PECOS I20260404000028); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 2,628 in Massachusetts → Look up another NPI →
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Verify Sidney Spragins Rehn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1022467Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Sidney Spragins Rehn among 2,628 pediatrics physician records in Massachusetts
Sidney Spragins Rehn, MD is one of 2,628 pediatrics physician records with a practice address in Massachusetts. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2022, is newer than 97% of them.
- NPI issued2022 · 97% of these records are older, 2% newer
- In a Medicare fileNo · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated2021 · median 2010 among the 319 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
822 pediatrics physician records list a practice address in Boston
They are 822 of the 41,865 NPPES records with a practice address in Boston, and 2,628 pediatrics physician records in Massachusetts. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,628 in Massachusetts → Every provider in Boston → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Fowzan Alkuraya, MDBoston, MA 021151518946607
- Lori Aronson, MDBoston, MA 021151114918323
- Matthew Gillman, MDBoston, MA 021151912978461
- Laura Grubb, M.D.Boston, MA 021151245210780
- Jordan Kreidberg, M.D.Boston, MA 021151083685820
- Peter Lang, MDBoston, MA 021151063403780
- Kelly Macaulay, MDBoston, MA 021151326018144
- Simon Manning, MBBS MRCPBoston, MA 021151346222635
Common questions
What is Sidney Spragins Rehn, MD's NPI number?
Sidney Spragins Rehn, MD's National Provider Identifier (NPI) is 1023756616, issued on May 24, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Sidney Spragins Rehn, MD located?
The NPPES record lists a practice address at 75 Francis St, Boston, MA, 02115. Phone: (617) 732-5500. Providers update this record themselves, so call before visiting.
How can I verify Sidney Spragins Rehn, MD's license?
NPPES lists Massachusetts license number 1022467, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.