Jon Spencer, FNP-C
NPI 1437842085 · Family Nurse Practitioner · San Marcos, TX
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jon Spencer, FNP-C is a Family Nurse Practitioner provider in San Marcos, TX (NPI 1437842085).
Provider details
- NPI number
- 1437842085
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP-C
- Sex
- Male
- Sole proprietor
- No
- License
- 1123746 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
3 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
85 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) |
|---|---|---|
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 31 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 21 | $13 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 21 | $8 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 12 | $16 |
Typical Medicare-allowed amounts for these services range $8–$16 (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 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 59 | 56 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 34 | 33 |
| Doxycycline Hyclate | 31 | 29 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 27 | 27 |
| Lisinopril | 24 | — |
| Rosuvastatin Calcium | 24 | — |
| Sulfamethoxazole/Trimethoprim |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$864 across 44 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
Registry dates
- Enumerated
- 2023-05-30
- Last updated
- 2025-04-07
- Certified
- 2025-04-07
Frequently asked questions
- What is Jon Spencer's NPI number?
- Jon Spencer's National Provider Identifier (NPI) is 1437842085, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jon Spencer's specialty?
- Jon Spencer is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Jon Spencer located?
- Jon Spencer's practice location on file with NPPES is 2406 Hunter Rd Ste 106, San Marcos, TX 78666-5256.
- What is Jon Spencer's phone number?
- The practice phone number listed in the NPPES registry for Jon Spencer is (512) 396-7686.
- Does Jon Spencer accept Medicare?
- Jon Spencer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jon Spencer's NPI active?
- Yes — Jon Spencer's NPI (1437842085) is active in the NPPES registry as of the last update on 2025-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.