Steven Laurence Keenholtz, M.D.
Infectious Disease Physician · Danvers, MA
Steven Laurence Keenholtz, M.D. is an infectious disease physician with a practice address in Danvers, Massachusetts, and NPI 1841219599, issued on Jul 19, 2006. Check the license (Massachusetts 45872, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Steven Laurence Keenholtz
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 45872 MA
Self-reported in NPPES; status is on the state search - Practice location
- 140 Commonwealth Ave, Danvers, MA 01923
- Phone
- (978) 777-6544
- Enumerated
- Jul 19, 2006
- Record last updated
- Nov 14, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (978) 774-2091
- Medicaid ID
- 0122866 MA
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 487 in Massachusetts → Look up another NPI →
Also registered at 140 Commonwealth Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Dino Crognale, MDFamily Medicine Physician1134155526
- Paul Gamber, D.M.D.General Practice Dentistry1710074992
Verify Steven Laurence Keenholtz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 45872Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average infectious disease physician in 2024
14 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Steven Laurence Keenholtz among 487 infectious disease physician records in Massachusetts
Steven Laurence Keenholtz, M.D. is one of 487 infectious disease physician records with a practice address in Massachusetts. 69% 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 17% of them.
- NPI issued2006 · 17% of these records are older, 47% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2014 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Massachusetts
There are 487 infectious disease physician records in Massachusetts.
All 487 in Massachusetts → Every provider in Danvers → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Humera Kausar, M.D.Beverly, MA 019151003158635
- Lucas Wolf, MDBeverly, MA 019151780754481
- Peter Sheckman, MDLynn, MA 019041013963883
- Catherine Lastavica, M.D.Manchester, MA 019441942321179
- Joseph Gross, M.D.Newburyport, MA 019501457355232
- Peter Sebeny, M.D.Newburyport, MA 019501194704932
- Jonathan Adler, MDWinchester, MA 018901255372884
- Patricia Toro, MDWinchester, MA 018901184760142
Common questions
What is Steven Laurence Keenholtz, M.D.'s NPI number?
Steven Laurence Keenholtz, M.D.'s National Provider Identifier (NPI) is 1841219599, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Steven Laurence Keenholtz, M.D. located?
The NPPES record lists a practice address at 140 Commonwealth Ave, Danvers, MA, 01923. Phone: (978) 777-6544. Providers update this record themselves, so call before visiting.
How can I verify Steven Laurence Keenholtz, M.D.'s license?
NPPES lists Massachusetts license number 45872, 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 Steven Laurence Keenholtz, M.D. prescribe under Medicare Part D?
In 2024, Steven Laurence Keenholtz, M.D. had 14 Medicare Part D claims; the average among infectious disease physician prescribers was 689. 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.