NPPES file of Aug 9, 2026

Robert Louis Berkowitz, M.D.

Psychiatry Physician · Natick, MA

Robert Louis Berkowitz, M.D. is a psychiatry physician with a practice address in Natick, Massachusetts, and NPI 1538183504, issued on Jul 26, 2006. Check the license (Massachusetts 70371, 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
1538183504
Name
Robert Louis Berkowitz
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
70371 MA
Self-reported in NPPES; status is on the state search
Practice location
67 Union St, Natick, MA 01760
Phone
(508) 651-1041
Enumerated
Jul 26, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(508) 651-0811
Medicaid ID
0121070 MA
Medicare enrollment
Enrolled (PECOS I20060320000277); accepts Medicare assignment
Medical or professional school
University Of California, Davis School Of Medicine, 1987
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.
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Also registered at 67 Union St

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

  1. Johanne Agne, NPAdult Health Nurse Practitioner1710022496
  2. Susan Almy, NPNurse Practitioner1598945594
  3. Lisa Ayles, ATCAthletic Trainer1508827957
  4. Stephen Belmonte, M.D.Ophthalmology Physician1942249834
  5. Kristen Bernstein, NPFamily Nurse Practitioner1205948676
  6. Meaghan BotelhoFamily Nurse Practitioner1730021478

Verify Robert Louis Berkowitz 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 70371    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

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36% fewer Medicare Part D claims than the average psychiatry physician in 2024

641 Medicare Part D claims for 40 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. 25 claims were for opioids.

  1. Robert Berkowitz641
  2. Specialty average1,000

Most prescribed

  1. Lorazepam53 claims
  2. Dextroamphetamine-Amphetamine49 claims
  3. Clozapine43 claims
  4. Trazodone Hcl35 claims
  5. Lamotrigine33 claims
  6. Zolpidem Tartrate Er30 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.

14 psychiatry physician records list a practice address in Natick

They are 14 of the 1,154 NPPES records with a practice address in Natick, and 2,736 psychiatry physician records in Massachusetts.

All 14 in Natick → All 2,736 in Massachusetts → Every provider in Natick →

Other psychiatry physician records in Massachusetts

  1. Karen Abdool, M.D., PH.DLynn, MA1942472824
  2. Harmony Abejuela, M.D.Quincy, MA1316259492
  3. Marielle Abell, PAAmherst, MA1275644072
  4. Steven Ablon, MDBoston, MA1083604839
  5. Keith Ablow, M.D.Newbury, MA1245423615
  6. Yousef Abou-Allaban, MDWalpole, MA1922040666
  7. Habiba Abozeid, MDBoston, MA1689408346
  8. Margarita Abramovich, MDPittsfield, MA1154883239
  9. Howard Abrams, MDSalem, MA1821102773
  10. David Abramson, MDCambridge, MA1376679787

Common questions

What is Robert Louis Berkowitz, M.D.'s NPI number?

Robert Louis Berkowitz, M.D.'s National Provider Identifier (NPI) is 1538183504, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Louis Berkowitz, M.D. located?

The NPPES record lists a practice address at 67 Union St, Natick, MA, 01760. Phone: (508) 651-1041. Providers update this record themselves, so call before visiting.

How can I verify Robert Louis Berkowitz, M.D.'s license?

NPPES lists Massachusetts license number 70371, 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 Robert Louis Berkowitz, M.D. prescribe under Medicare Part D?

In 2024, Robert Louis Berkowitz, M.D. had 641 Medicare Part D claims for 40 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.

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.