Douglas Katz, MD
NPI 1780693820 · Internal Medicine Physician · Andover, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Katz, MD is a Internal Medicine Physician provider in Andover, MA (NPI 1780693820).
Provider details
- NPI number
- 1780693820
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 70570 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
679 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 169 | $76 |
| Urinalysis, Manual Test81002 | 90 | $3 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 86 | $101 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 68 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 50 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 48 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 39 | 34 |
| Doxycycline Monohydrate | 34 | 34 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 30 | 29 |
| Diclofenac Sodium | 26 | 25 |
| Tramadol Hcl | 19 | 18 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 17 | 16 |
| Cephalexin | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-07
- Last updated
- 2015-01-08
Frequently asked questions
- What is Douglas Katz's NPI number?
- Douglas Katz's National Provider Identifier (NPI) is 1780693820, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Katz's specialty?
- Douglas Katz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Katz located?
- Douglas Katz's practice location on file with NPPES is 323 Lowell St, Andover, MA 01810-4501.
- What is Douglas Katz's phone number?
- The practice phone number listed in the NPPES registry for Douglas Katz is (978) 783-5000.
- Does Douglas Katz accept Medicare?
- Douglas Katz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Katz's NPI active?
- Yes — Douglas Katz's NPI (1780693820) is active in the NPPES registry as of the last update on 2015-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.