Mary Ahlers, DO
NPI 1609301365 · Family Medicine Physician · Brookings, SD
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Ahlers, DO is a Family Medicine Physician provider in Brookings, SD (NPI 1609301365).
Provider details
- NPI number
- 1609301365
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- 12378 (SD)
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
9 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
884 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) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 138 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 135 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 100 | $13 |
| Hemoglobin A1c Level83036 | 83 | $10 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 66 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 54 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 87 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 314 | 43 |
| Atorvastatin Calcium | 304 | 53 |
| Amlodipine Besylate | 213 | 35 |
| Lisinopril | 181 | 31 |
| Losartan Potassium | 160 | 34 |
| Omeprazole | 139 | 26 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-05-01
- Last updated
- 2021-01-04
- Certified
- 2021-01-04
Frequently asked questions
- What is Mary Ahlers's NPI number?
- Mary Ahlers's National Provider Identifier (NPI) is 1609301365, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ahlers's specialty?
- Mary Ahlers is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Ahlers located?
- Mary Ahlers's practice location on file with NPPES is 400 22nd Ave, Brookings, SD 57006-2450.
- What is Mary Ahlers's phone number?
- The practice phone number listed in the NPPES registry for Mary Ahlers is (605) 697-9500.
- Does Mary Ahlers accept Medicare?
- Mary Ahlers is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Ahlers's NPI active?
- Yes — Mary Ahlers's NPI (1609301365) is active in the NPPES registry as of the last update on 2021-01-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.