Mark Spencer, MD
NPI 1497719728 · Family Medicine Physician · Wendell, ID
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Spencer, MD is a Family Medicine Physician provider in Wendell, ID (NPI 1497719728).
Provider details
- NPI number
- 1497719728
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- M4484 (ID)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
127 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 49 | $84 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 34 | $72 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 31 | $119 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 13 | $120 |
Typical Medicare-allowed amounts for these services range $72–$120 (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 · 174 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 351 | 104 |
| Tamsulosin Hcl | 286 | 82 |
| Amlodipine Besylate | 275 | 83 |
| Omeprazole | 271 | 72 |
| Lisinopril | 271 | 76 |
| Atorvastatin Calcium | 266 | 69 |
| Gabapentin |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 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
Additional practice locations (1)
- 410 N Idaho StWendell, ID 83355-5038Phone: (208) 536-3995Fax: (888) 440-7959
Registry dates
- Enumerated
- 2006-04-13
- Last updated
- 2025-06-11
- Certified
- 2025-06-11
Frequently asked questions
- What is Mark Spencer's NPI number?
- Mark Spencer's National Provider Identifier (NPI) is 1497719728, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Spencer's specialty?
- Mark Spencer is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Spencer located?
- Mark Spencer's practice location on file with NPPES is 410 N Idaho St, Wendell, ID 83355-5038.
- What is Mark Spencer's phone number?
- The practice phone number listed in the NPPES registry for Mark Spencer is (208) 990-3226.
- Does Mark Spencer accept Medicare?
- Mark Spencer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Spencer's NPI active?
- Yes — Mark Spencer's NPI (1497719728) is active in the NPPES registry as of the last update on 2025-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.