Spencer Walker, M.D.
NPI 1831150564 · Family Medicine Physician · Littleton, CO
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Spencer Walker, M.D. is a Family Medicine Physician provider in Littleton, CO (NPI 1831150564).
Provider details
- NPI number
- 1831150564
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 38891 (CO)
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
20 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
462 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 | 250 | $127 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 107 | $131 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 32 | $90 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 27 | $19 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 19 | $14 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 99 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 251 | 73 |
| Levothyroxine Sodium | 208 | 56 |
| Losartan Potassium | 167 | 45 |
| Lisinopril | 145 | 37 |
| Amlodipine Besylate | 137 | 33 |
| Omeprazole | 101 | 23 |
| Metformin Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 3676 Parker BlvdPueblo, CO 81008-2212Phone: (719) 553-2201Fax: (719) 553-2224
Registry dates
- Enumerated
- 2006-03-31
- Last updated
- 2021-03-29
- Certified
- 2021-03-29
Frequently asked questions
- What is Spencer Walker's NPI number?
- Spencer Walker's National Provider Identifier (NPI) is 1831150564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Spencer Walker's specialty?
- Spencer Walker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Spencer Walker located?
- Spencer Walker's practice location on file with NPPES is 7720 S Broadway Ste 350, Littleton, CO 80122-2634.
- What is Spencer Walker's phone number?
- The practice phone number listed in the NPPES registry for Spencer Walker is (720) 528-3559.
- Does Spencer Walker accept Medicare?
- Spencer Walker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Spencer Walker's NPI active?
- Yes — Spencer Walker's NPI (1831150564) is active in the NPPES registry as of the last update on 2021-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.