Nestor Sainz Rueda, MD
NPI 1003444563 · Family Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nestor Sainz Rueda, MD is a Family Medicine Physician provider in Boston, MA (NPI 1003444563).
Provider details
- NPI number
- 1003444563
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 1019480 (MA)
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
6 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
149 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 | 65 | $102 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 31 | $9 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 19 | $10 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 18 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 16 | $69 |
Typical Medicare-allowed amounts for these services range $9–$102 (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 · 42 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 177 | 83 |
| Amlodipine Besylate | 97 | 42 |
| Rosuvastatin Calcium | 79 | 33 |
| Diclofenac Sodium | 63 | 25 |
| Fluticasone Propionate | 61 | 19 |
| Lisinopril | 60 | 27 |
| Losartan Potassium | 56 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$331 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
Registry dates
- Enumerated
- 2020-03-31
- Last updated
- 2024-08-28
- Certified
- 2024-08-28
Frequently asked questions
- What is Nestor Sainz Rueda's NPI number?
- Nestor Sainz Rueda's National Provider Identifier (NPI) is 1003444563, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nestor Sainz Rueda's specialty?
- Nestor Sainz Rueda is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nestor Sainz Rueda located?
- Nestor Sainz Rueda's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2621.
- What is Nestor Sainz Rueda's phone number?
- The practice phone number listed in the NPPES registry for Nestor Sainz Rueda is (800) 711-4644.
- Does Nestor Sainz Rueda accept Medicare?
- Nestor Sainz Rueda is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nestor Sainz Rueda's NPI active?
- Yes — Nestor Sainz Rueda's NPI (1003444563) is active in the NPPES registry as of the last update on 2024-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.