Alexander Johnston, MD
NPI 1528761335 · Internal Medicine Physician · Detroit, MI
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Johnston, MD is a Internal Medicine Physician provider in Detroit, MI (NPI 1528761335).
Provider details
- NPI number
- 1528761335
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 86861-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 27 | — |
| Rosuvastatin Calcium | 25 | — |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 21 | — |
| Atorvastatin Calcium | 19 | 11 |
| Carvedilol | 17 | 12 |
| Sitagliptin Phosphatebrand: Januvia | 13 | — |
Practice location
Mailing address
Additional practice locations (1)
- 8701 Watertown Plank RdMilwaukee, WI 53226-3548Phone: (414) 955-4575
Registry dates
- Enumerated
- 2023-03-22
- Last updated
- 2026-05-11
- Certified
- 2026-05-11
Frequently asked questions
- What is Alexander Johnston's NPI number?
- Alexander Johnston's National Provider Identifier (NPI) is 1528761335, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Johnston's specialty?
- Alexander Johnston is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Johnston located?
- Alexander Johnston's practice location on file with NPPES is 22201 Moross Rd Ste 50, Detroit, MI 48236-2166.
- What is Alexander Johnston's phone number?
- The practice phone number listed in the NPPES registry for Alexander Johnston is (313) 343-7774.
- Does Alexander Johnston accept Medicare?
- Alexander Johnston is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Johnston's NPI active?
- Yes — Alexander Johnston's NPI (1528761335) is active in the NPPES registry as of the last update on 2026-05-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.