Douglas Michael Katz, MD
Internal Medicine Physician · Andover, MA
Douglas Michael Katz, MD is an internal medicine physician with a practice address in Andover, Massachusetts, and NPI 1780693820, issued on Aug 7, 2006. Check the license (Massachusetts 70570, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Douglas Michael Katz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 70570 MA
Self-reported in NPPES; status is on the state search - Practice location
- 323 Lowell St, Andover, MA 01810
- Phone
- (978) 783-5000
- Enumerated
- Aug 7, 2006
- Record last updated
- Jan 8, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (978) 313-8188
- Medicaid ID
- 3070131 MA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 323 Lowell St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Andriola, M.D.Orthopaedic Surgery Physician1174584833
- Melissa Bergeron, P.A.Medical Physician Assistant1356485379
- Matthew Carlson, PA-CSurgical Physician Assistant1992028583
- Madhavi Challagulla, MDInternal Medicine Physician1023132800
- Kelly Czworka, NPNurse Practitioner1104984251
- Charae D'Ambra, N.P.Pediatric Nurse Practitioner1912199217
Verify Douglas Michael Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 70570Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
364 Medicare Part D claims for 238 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 33 claims were for opioids.
Most prescribed
- Prednisone39 claims
- Doxycycline Monohydrate34 claims
- Amoxicillin-Clavulanate Potass30 claims
- Diclofenac Sodium26 claims
- Tramadol Hcl19 claims
- Albuterol Sulfate Hfa17 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.
Douglas Michael Katz among 6,825 internal medicine physician records in Massachusetts
Douglas Michael Katz, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2015 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
15 internal medicine physician records list a practice address in Andover
They are 15 of the 807 NPPES records with a practice address in Andover, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Andover → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Madhavi Challagulla, MDAndover, MA 018101023132800
- Chiochen Cheng, M.D.Andover, MA 018101346200300
- Susan Feeney, NPAndover, MA 018101730255019
- Paul Lemaitre, M.D.Andover, MA 018101255370250
- Amy Patel, M.D.Andover, MA 018101811175847
- Gary Portnay, M.DAndover, MA 018101346289345
- Sayeeda Rahman, M.D.Andover, MA 018101467551218
- Alida Rosado Rodriguez, MDAndover, MA 018101255594388
Common questions
What is Douglas Michael Katz, MD's NPI number?
Douglas Michael Katz, MD's National Provider Identifier (NPI) is 1780693820, issued on Aug 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Michael Katz, MD located?
The NPPES record lists a practice address at 323 Lowell St, Andover, MA, 01810. Phone: (978) 783-5000. Providers update this record themselves, so call before visiting.
How can I verify Douglas Michael Katz, MD's license?
NPPES lists Massachusetts license number 70570, 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 Douglas Michael Katz, MD prescribe under Medicare Part D?
In 2024, Douglas Michael Katz, MD had 364 Medicare Part D claims for 238 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.