Rafael Walker -Santiago, M.D.
NPI 1366736928 · Adult Reconstructive Orthopaedic Surgery Physician · Grafton, WI
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rafael Walker -Santiago, M.D. is a Adult Reconstructive Orthopaedic Surgery Physician provider in Grafton, WI (NPI 1366736928).
Provider details
- NPI number
- 1366736928
- Entity type
- Individual
- Primary specialty
- Adult Reconstructive Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 69295 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
15 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
330 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 138 | $119 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 57 | $104 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 53 | $82 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 41 | $63 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 21 | $76 |
| Replacement of Thigh Bone and Hip Joint With Prosthesis |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 31 | 24 |
| Meloxicam | 27 | 21 |
| Diclofenac Sodium | 15 | 11 |
| Mupirocin | 13 | 13 |
| Oxycodone Hcl | 13 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,549 across 9 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
Additional practice locations (2)
- 1 Hospital DriveColumbia, MO 65212-0001Phone: (573) 882-2663Fax: (573) 882-1760
- Rcm Edif Principal Ofic 965Centro Medico De Puerto RicoSan Juan, PR 00935-0001Phone: (787) 354-5131
Registry dates
- Enumerated
- 2011-06-01
- Last updated
- 2023-09-12
- Certified
- 2023-09-12
Frequently asked questions
- What is Rafael Walker -Santiago's NPI number?
- Rafael Walker -Santiago's National Provider Identifier (NPI) is 1366736928, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rafael Walker -Santiago's specialty?
- Rafael Walker -Santiago is listed in the NPPES registry with a primary specialty of Adult Reconstructive Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Rafael Walker -Santiago located?
- Rafael Walker -Santiago's practice location on file with NPPES is 975 Port Washington Rd, Grafton, WI 53024-9201.
- What is Rafael Walker -Santiago's phone number?
- The practice phone number listed in the NPPES registry for Rafael Walker -Santiago is (262) 329-1000.
- Does Rafael Walker -Santiago accept Medicare?
- Rafael Walker -Santiago is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rafael Walker -Santiago's NPI active?
- Yes — Rafael Walker -Santiago's NPI (1366736928) is active in the NPPES registry as of the last update on 2023-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.