Michael Almquist, DO
NPI 1891323531 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Almquist, DO is a Internal Medicine Physician provider in San Antonio, TX (NPI 1891323531).
Provider details
- NPI number
- 1891323531
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 336158 (LA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
710 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 288 | $112 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 168 | $75 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 83 | $109 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 76 | $164 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $87 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 67 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 201 | 78 |
| Rosuvastatin Calcium | 111 | 46 |
| Losartan Potassium | 105 | 44 |
| Lisinopril | 95 | 40 |
| Amlodipine Besylate | 92 | 36 |
| Metoprolol Succinate | 68 | 26 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$472 across 25 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 2 Spurs Lane Bldg 6 Ste 100San Antonio, TX 78240-1760Phone: (210) 615-8003Fax: (210) 615-1141
- 903 Sw 24th StSan Antonio, TX 78207-5136Phone: (210) 432-7801Fax: (210) 432-7802
Registry dates
- Enumerated
- 2020-03-30
- Last updated
- 2026-03-23
- Certified
- 2026-03-23
Frequently asked questions
- What is Michael Almquist's NPI number?
- Michael Almquist's National Provider Identifier (NPI) is 1891323531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Almquist's specialty?
- Michael Almquist is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Almquist located?
- Michael Almquist's practice location on file with NPPES is 4502 Medical Dr, San Antonio, TX 78229-4402.
- What is Michael Almquist's phone number?
- The practice phone number listed in the NPPES registry for Michael Almquist is (210) 358-4000.
- Does Michael Almquist accept Medicare?
- Michael Almquist is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Almquist's NPI active?
- Yes — Michael Almquist's NPI (1891323531) is active in the NPPES registry as of the last update on 2026-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.