Grant Doolittle, DO
NPI 1457464836 · Internal Medicine Physician · Ames, IA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Doolittle, DO is a Internal Medicine Physician provider in Ames, IA (NPI 1457464836).
Provider details
- NPI number
- 1457464836
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 3721 (IA)
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
11,245 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 1,349 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 779 | $84 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 773 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 762 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 752 | $119 |
| Thyroxine (thyroid Chemical), Free84439 | 629 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 150 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,135 | 296 |
| Amlodipine Besylate | 670 | 168 |
| Rosuvastatin Calcium | 580 | 165 |
| Levothyroxine Sodium | 549 | 136 |
| Omeprazole | 523 | 141 |
| Losartan Potassium | 489 | 123 |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-17
- Last updated
- 2020-11-11
- Certified
- 2020-11-11
Frequently asked questions
- What is Grant Doolittle's NPI number?
- Grant Doolittle's National Provider Identifier (NPI) is 1457464836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Doolittle's specialty?
- Grant Doolittle is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Grant Doolittle located?
- Grant Doolittle's practice location on file with NPPES is 1215 Duff Ave, Ames, IA 50010-3014.
- What is Grant Doolittle's phone number?
- The practice phone number listed in the NPPES registry for Grant Doolittle is (515) 239-4431.
- Does Grant Doolittle accept Medicare?
- Grant Doolittle is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Doolittle's NPI active?
- Yes — Grant Doolittle's NPI (1457464836) is active in the NPPES registry as of the last update on 2020-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.