NPPES file of Aug 9, 2026

Holly K. Michaelson, MD

Surgery Physician · Northampton, MA

Holly K. Michaelson, MD is a surgery physician with a practice address in Northampton, Massachusetts, and NPI 1477513679, issued on Mar 23, 2006. Check the license (Massachusetts 221242, 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
1477513679
Name
Holly K. Michaelson
Credential
MD
Primary taxonomy
Surgery Physician 208600000X
License number
221242 MA
Self-reported in NPPES; status is on the state search
Practice location
76 Carlon Dr, Northampton, MA 01060
Phone
(413) 584-4637
Enumerated
Mar 23, 2006
Record last updated
Oct 24, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(413) 584-4787
Medicaid ID
2075725 MA
Medicare enrollment
Enrolled (PECOS I20040809000609); accepts Medicare assignment
Medical or professional school
Temple University School Of Medicine, 1997
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 76 Carlon Dr

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

  1. Julia De Almeida, MDFamily Medicine Physician1295792349
  2. Bridget MulkerrinsClinical Social Worker1659853554
  3. Richard Norris, MDPhysical Medicine & Rehabilitation Physician1487617734
  4. Timothy Parsons, MDFamily Medicine Physician1215990569
  5. Henry Rosenberg, MDInternal Medicine Physician1801859152
  6. Bruce Weinraub, MDInternal Medicine Physician1447225099

Verify Holly K. Michaelson 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 221242
    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

46% more Medicare Part D claims than the average surgery physician in 2024

215 Medicare Part D claims for 149 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 139 claims were for opioids.

  1. Holly Michaelson215
  2. Specialty average147

Most prescribed

  1. Oxycodone Hcl134 claims
  2. Erythromycin15 claims
  3. Gavilyte-G14 claims
  4. Neomycin Sulfate14 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: $21.13

1 payment: food and beverage; the largest payer was Ethicon US, LLC. The 17,103 providers of this specialty with any payment received $3,513.80 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Holly Michaelson$21.13
  2. Specialty average$3,513.80

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

Bills Medicare through one group practice

  1. Mass General Brigham Medical Group Western Massachusetts IncNorthampton, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Holly K. Michaelson among 1,003 surgery physician records in Massachusetts

Holly K. Michaelson, MD is one of 1,003 surgery physician records with a practice address in Massachusetts. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 58% newer
  • In a Medicare fileYes · 66% of these records are
  • In the CMS Doctors and Clinicians fileYes · 50% of these records are
  • Graduated1997 · median 2003 among the 503 with a school on file
  • Record last updated2011 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in Massachusetts

There are 1,003 surgery physician records in Massachusetts.

The 8 surgery physician records with the nearest ZIP codes

  1. Mark Chodoff, MDNorthampton, MA 010601710912944
  2. Alvah Hinckley, M.D.Northampton, MA 010601912994187
  3. Alexander Miller, MDNorthampton, MA 010601538156385
  4. Leslie Go, MDLeeds, MA 010531356329833
  5. Kelly Galster, D.O.Palmer, MA 010691871722272
  6. David Katz, MD FACSPalmer, MA 010691689602492
  7. Pruushotam Puri, M.D.Palmer, MA 010691124149273
  8. Steven Steiner, MDPalmer, MA 010691508898982

Common questions

What is Holly K. Michaelson, MD's NPI number?

Holly K. Michaelson, MD's National Provider Identifier (NPI) is 1477513679, issued on Mar 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Holly K. Michaelson, MD located?

The NPPES record lists a practice address at 76 Carlon Dr, Northampton, MA, 01060. Phone: (413) 584-4637. Providers update this record themselves, so call before visiting.

How can I verify Holly K. Michaelson, MD's license?

NPPES lists Massachusetts license number 221242, 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 Holly K. Michaelson, MD prescribe under Medicare Part D?

In 2024, Holly K. Michaelson, MD had 215 Medicare Part D claims for 149 beneficiaries; the average among surgery physician prescribers was 147. 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.