Michelle Castellanos Martin, MD
NPI 1215243621 · Internal Medicine Physician · Carolina, PR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michelle Castellanos Martin, MD is a Internal Medicine Physician provider in Carolina, PR (NPI 1215243621).
Provider details
- NPI number
- 1215243621
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 18725 (PR)
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
15 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
80 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 64 | $73 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $160 |
Typical Medicare-allowed amounts for these services range $73–$160 (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 · 34 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Famotidine | 343 | 325 |
| Levofloxacin | 86 | 83 |
| Atorvastatin Calcium | 63 | 63 |
| Losartan Potassium | 63 | 40 |
| Methylprednisolone | 60 | 59 |
| Metronidazole | 55 | 53 |
| Ciprofloxacin Hcl | 52 | 51 |
| Furosemide | 52 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$226 across 4 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 (1)
- 100 Ave LaurelUrb Santa JuanitaBayamon, PR 00956-4816Phone: (787) 787-5151
Registry dates
- Enumerated
- 2010-08-23
- Last updated
- 2022-07-21
Frequently asked questions
- What is Michelle Castellanos Martin's NPI number?
- Michelle Castellanos Martin's National Provider Identifier (NPI) is 1215243621, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michelle Castellanos Martin's specialty?
- Michelle Castellanos Martin is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Michelle Castellanos Martin located?
- Michelle Castellanos Martin's practice location on file with NPPES is 80100 Calle Munoz Rivera Esq. Molinillo, Carolina, PR 00985-6179.
- What is Michelle Castellanos Martin's phone number?
- The practice phone number listed in the NPPES registry for Michelle Castellanos Martin is (787) 626-3322.
- Does Michelle Castellanos Martin accept Medicare?
- Michelle Castellanos Martin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michelle Castellanos Martin's NPI active?
- Yes — Michelle Castellanos Martin's NPI (1215243621) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.