Nathaniel Parker, DO
NPI 1366904963 · Family Medicine Physician · Nipomo, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Parker, DO is a Family Medicine Physician provider in Nipomo, CA (NPI 1366904963).
Provider details
- NPI number
- 1366904963
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
73 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) |
|---|---|---|
| Hemoglobin A1c Level83036 | 53 | $6 |
| Manual Urinalysis Test With Examination Using Microscope, Non-Automated81000 | 20 | $4 |
Typical Medicare-allowed amounts for these services range $4–$6 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 77 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 352 | 110 |
| Lisinopril | 265 | 76 |
| Metformin Hcl | 169 | 56 |
| Amlodipine Besylate | 155 | 49 |
| Losartan Potassium | 122 | 44 |
| Omeprazole | 117 | 46 |
| Rosuvastatin Calcium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$28 across 1 record (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
Registry dates
- Enumerated
- 2019-04-02
- Last updated
- 2022-08-26
- Certified
- 2022-08-26
Frequently asked questions
- What is Nathaniel Parker's NPI number?
- Nathaniel Parker's National Provider Identifier (NPI) is 1366904963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Parker's specialty?
- Nathaniel Parker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Parker located?
- Nathaniel Parker's practice location on file with NPPES is 150 Tejas Pl, Nipomo, CA 93444-9123.
- What is Nathaniel Parker's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Parker is (805) 929-3211.
- Does Nathaniel Parker accept Medicare?
- Nathaniel Parker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Parker's NPI active?
- Yes — Nathaniel Parker's NPI (1366904963) is active in the NPPES registry as of the last update on 2022-08-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.