NPPES file of Aug 9, 2026

Alan Stewart Penzias, M.D.

Reproductive Endocrinology Physician · Waltham, MA

Alan Stewart Penzias, M.D. is a reproductive endocrinology physician with a practice address in Waltham, Massachusetts, and NPI 1497701866, issued on May 26, 2006. Check the license (Massachusetts 58565, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1497701866
Name
Alan Stewart Penzias
Credential
M.D.
Primary taxonomy
Reproductive Endocrinology Physician 207VE0102X
License numbers
58565 MA
015833 ME
272983 NY
MD11056 RI
Self-reported in NPPES; status is on the state search
Practice location
130 2ND Ave, Waltham, MA 02451
Phone
(781) 434-6500
Enumerated
May 26, 2006
Record last updated
May 22, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(781) 434-6501
Medicaid ID
3095011 MA
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 130 2ND Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Merle Berger, M.D.Reproductive Endocrinology Physician1215974506
  2. Elizabeth Blumberg, PSY.D.Mental Health Counselor1154525194
  3. Tara Cousineau, PH.D.Psychologist1346296381
  4. Alice Domar, PH.D.Cognitive & Behavioral Psychologist1417902099
  5. Kristin Fabbri, LMHCMental Health Counselor1902167414
  6. Karen Fasciano, PSY.D.School Psychologist1801843438

Verify Alan Stewart Penzias in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 58565    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $21.22

1 payment: food and beverage; the largest payer was Emd Serono, Inc. The 1,066 providers of this specialty with any payment received $1,086.52 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alan Penzias$21.22
  2. Specialty average$1,086.52

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Reproductive Endocrinology Physician providers in Massachusetts

There are 69 reproductive endocrinology physician records in Massachusetts.

All 69 in Massachusetts → Every provider in Waltham →

Other reproductive endocrinology physician records in Massachusetts

  1. Carol Anania, M.D.Dedham, MA1124015029
  2. Jeremy ApplebaumBoston, MA1366959116
  3. Sara Arian, MD, MSCWaltham, MA1336495597
  4. Armando Arroyo, MDWorcester, MA1538188420
  5. Steven Bayer, M.D.Brookline, MA1154375038
  6. Brian Berger, M.D.Quincy, MA1811934557
  7. Merle Berger, M.D.Waltham, MA1215974506
  8. Pietro BortolettoDedham, MA1720477516
  9. Vito Cardone, M.D.Stoneham, MA1285707356
  10. Eden Cardozo Levy, M.D.Boston, MA1619109469

Common questions

What is Alan Stewart Penzias, M.D.'s NPI number?

Alan Stewart Penzias, M.D.'s National Provider Identifier (NPI) is 1497701866, issued on May 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Alan Stewart Penzias, M.D. located?

The NPPES record lists a practice address at 130 2ND Ave, Waltham, MA, 02451. Phone: (781) 434-6500. Providers update this record themselves, so call before visiting.

How can I verify Alan Stewart Penzias, M.D.'s license?

NPPES lists Massachusetts license number 58565, 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.