Ma. Dolores Del Castillo, M.D.
NPI 1952741209 · Endocrinology, Diabetes & Metabolism Physician · Plymouth, MA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ma. Dolores Del Castillo, M.D. is a Endocrinology, Diabetes & Metabolism Physician provider in Plymouth, MA (NPI 1952741209).
Provider details
- NPI number
- 1952741209
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 25MA09329000 (NJ)
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
12 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
316 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 | 94 | $129 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 91 | $92 |
| Hemoglobin A1c Level83036 | 73 | $10 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251 | 44 | $34 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 14 | $182 |
Typical Medicare-allowed amounts for these services range $10–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 182 | 86 |
| Metformin Hcl | 149 | 72 |
| Pen Needle, Diabeticbrand: Nano 2nd Gen Pen Needle | 143 | 76 |
| Semaglutidebrand: Ozempic | 132 | 50 |
| Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar | 110 | 52 |
| Metformin Hclbrand: Metformin Hcl Er | 99 | 53 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$48 across 2 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)
- 800 Washington StBoston, MA 02111Phone: (617) 636-5000
- 355 Grand StJersey City, NJ 07302-4321Phone: (201) 915-2000
Registry dates
- Enumerated
- 2013-07-01
- Last updated
- 2020-11-19
- Certified
- 2020-11-19
Frequently asked questions
- What is Ma. Dolores Del Castillo's NPI number?
- Ma. Dolores Del Castillo's National Provider Identifier (NPI) is 1952741209, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ma. Dolores Del Castillo's specialty?
- Ma. Dolores Del Castillo is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Ma. Dolores Del Castillo located?
- Ma. Dolores Del Castillo's practice location on file with NPPES is 110 Long Pond Rd, Plymouth, MA 02360-2642.
- What is Ma. Dolores Del Castillo's phone number?
- The practice phone number listed in the NPPES registry for Ma. Dolores Del Castillo is (508) 210-5920.
- Does Ma. Dolores Del Castillo accept Medicare?
- Ma. Dolores Del Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ma. Dolores Del Castillo's NPI active?
- Yes — Ma. Dolores Del Castillo's NPI (1952741209) is active in the NPPES registry as of the last update on 2020-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.