Nathan Ostler, FNP-C
NPI 1023412301 · Family Nurse Practitioner · Mesa, AZ
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Ostler, FNP-C is a Family Nurse Practitioner provider in Mesa, AZ (NPI 1023412301).
Provider details
- NPI number
- 1023412301
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Male
- Sole proprietor
- Yes
- License
- AP7346 (AZ)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
11 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,049 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 392 | $104 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 328 | $51 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 223 | $13 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 32 | $137 |
| Annual, Face-To-Face Intensive Behavioral Therapy for Cardiovascular Disease, Individual, 15 MinutesG0446 | 31 | $21 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 30 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 68 | 27 |
| Losartan Potassium | 43 | 17 |
| Atorvastatin Calcium | 41 | 16 |
| Gabapentin | 35 | 14 |
| Rosuvastatin Calcium | 32 | — |
| Amlodipine Besylate | 31 | 13 |
| Lisinopril |
Practice location
Mailing address
Additional practice locations (1)
- 4049 E Holmes AveMesa, AZ 85206-3281Phone: (480) 939-3409Fax: (703) 634-7483
Registry dates
- Enumerated
- 2014-10-15
- Last updated
- 2023-07-06
- Certified
- 2023-06-26
Frequently asked questions
- What is Nathan Ostler's NPI number?
- Nathan Ostler's National Provider Identifier (NPI) is 1023412301, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Ostler's specialty?
- Nathan Ostler is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Nathan Ostler located?
- Nathan Ostler's practice location on file with NPPES is 4111 E Auto Valley Drive, Mesa, AZ 85206.
- What is Nathan Ostler's phone number?
- The practice phone number listed in the NPPES registry for Nathan Ostler is (480) 939-3409.
- Does Nathan Ostler accept Medicare?
- Nathan Ostler is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Ostler's NPI active?
- Yes — Nathan Ostler's NPI (1023412301) is active in the NPPES registry as of the last update on 2023-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.