Samuel Castles, MD
NPI 1033730015 · Family Medicine Physician · Anchorage, AK
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Samuel Castles, MD is a Family Medicine Physician provider in Anchorage, AK (NPI 1033730015).
Provider details
- NPI number
- 1033730015
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 161327 (AK)
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
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
259 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 108 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 102 | $126 |
| Telephone Medical Discussion With Physician, 5-10 Minutes99441 | 34 | $46 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 15 | $85 |
Typical Medicare-allowed amounts for these services range $46–$126 (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 · 55 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 158 | 27 |
| Omeprazole | 127 | 22 |
| Amlodipine Besylate | 90 | 19 |
| Losartan Potassium | 88 | 21 |
| Lisinopril | 72 | 19 |
| Trazodone Hcl | 67 | — |
| Tamsulosin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-05-01
- Last updated
- 2020-06-30
- Certified
- 2020-06-30
Frequently asked questions
- What is Samuel Castles's NPI number?
- Samuel Castles's National Provider Identifier (NPI) is 1033730015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Samuel Castles's specialty?
- Samuel Castles is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Samuel Castles located?
- Samuel Castles's practice location on file with NPPES is 1201 E 36th Ave, Anchorage, AK 99508-4372.
- What is Samuel Castles's phone number?
- The practice phone number listed in the NPPES registry for Samuel Castles is (907) 562-9229.
- Does Samuel Castles accept Medicare?
- Samuel Castles is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Samuel Castles's NPI active?
- Yes — Samuel Castles's NPI (1033730015) is active in the NPPES registry as of the last update on 2020-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.