2026 NPPES data Pediatric Endocrinology Physician NPI 1831173723 M.D.
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REBECCA SAENZ, M.D.

Pediatric Endocrinology Physician in SANTURCE, Puerto Rico. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
208
Medicare Part D claims · 11 beneficiaries · Pediatric Endocrinology Physician avg: 151
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$77.29
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: REBECCA SAENZ, M.D. is a Pediatric Endocrinology Physician ([object Object]) practicing in SANTURCE, Puerto Rico with a Medicare Part D prescribing footprint of 208 claims across 11 beneficiaries — 17% brand-name prescribing . Industry payments of $77.29 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: REBECCA SAENZ, M.D. filed 208 Medicare Part D claims in 2023 across SANTURCE, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

REBECCA SAENZ, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

REBECCA SAENZ, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 12/03/2005

NPI 1831173723

Primary specialty

Pediatric Endocrinology Physician

Niche

1,457 US NPIs in this specialty

Medicare Part D claims

208 38% vs specialty avg

2023 prescription claims

Specialty avg: 151

Specialty distribution in Puerto Rico

How Pediatric Endocrinology Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Pediatric Endocrinology Physician share within Puerto Rico

1. Pediatric Endocrinology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pediatric Endocrinology Physician share within Puerto Rico

Specialty board-certification context

Estimated specialty board-certified rate — Pediatric Endocrinology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pediatric Endocrinology Physician ABMS/AOA estimate

Est. board-certified rate (Pediatric Endocrinology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pediatric Endocrinology Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

REBECCA SAENZ, M.D. is a Pediatric Endocrinology Physician provider practicing in SANTURCE, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1831173723. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

REBECCA SAENZ, M.D. appears in the CMS NPPES registry as a Pediatric Endocrinology Physician provider holding M.D. credentials at 258 CALLE SAN JORGE, SANTURCE, PR, 00912, with a listed phone of (787) 268-1274. NPI 1831173723 was issued on 12/03/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SAENZ most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 208 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $12K in drug spend, split 17% brand-name and 83% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Pediatric Endocrinology Physician is a narrow specialty nationwide, with 1,457 enrolled providers across 51 states and an average of 151 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

258 CALLE SAN JORGE
SANTURCE, PR 00912

Provider Details

NPI 1831173723
Specialty Pediatric Endocrinology Physician
Credentials M.D.
Gender Female
NPI Issued 12/03/2005

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for REBECCA SAENZ, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$77

Largest payer

Dexcom, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

REBECCA SAENZ, M.D. — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 208 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

208
Total Claims
$12K
Total Drug Cost
11
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
264
Total Day Supply
7,194
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$9K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
52.4 years
Avg HCC Risk Score
0.68

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Sertraline Hcl
20
Metformin Hcl
14
Synthroid
Levothyroxine Sodium
13
Amlodipine Besylate
12
Diltiazem 24hr Er (Cd)
Diltiazem Hcl
12
Simvastatin
12
Atorvastatin Calcium
11
Hydrochlorothiazide
11
Levothyroxine Sodium
11
Lumigan
Bimatoprost
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Pediatric Endocrinology Physician Overview

How REBECCA SAENZ, M.D. fits within the Pediatric Endocrinology Physician landscape nationally.

1,457
Pediatric Endocrinology Physician Providers in US
51
States with Pediatric Endocrinology Physician
151
Avg Claims per Provider

REBECCA SAENZ, M.D.'s 208 claims are above the specialty average of 151.

Nearby Pediatric Endocrinology Physician Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as SAENZ.

Compare Pediatric Endocrinology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is REBECCA SAENZ, M.D.'s specialty?
REBECCA SAENZ, M.D. specializes in Pediatric Endocrinology Physician and practices in SANTURCE, Puerto Rico. Credentials: M.D..
How much does REBECCA SAENZ, M.D. prescribe under Medicare Part D?
In 2023, REBECCA SAENZ, M.D. wrote 208 Medicare Part D claims totaling $12K in drug costs for 11 beneficiaries.
Where is REBECCA SAENZ, M.D. located?
REBECCA SAENZ, M.D. is located at 258 CALLE SAN JORGE, SANTURCE, PR, 00912. Phone: (787) 268-1274.
What is REBECCA SAENZ, M.D.'s NPI number?
REBECCA SAENZ, M.D.'s National Provider Identifier (NPI) is 1831173723, issued on 12/03/2005.
Does REBECCA SAENZ, M.D. prescribe more brand-name or generic drugs?
REBECCA SAENZ, M.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $9K in brand drug costs.
How many Pediatric Endocrinology Physician providers are there in the US?
There are 1,457 Pediatric Endocrinology Physician providers across 51 states in the US. The average Pediatric Endocrinology Physician provider writes 151 Medicare Part D claims per year.
What drugs does REBECCA SAENZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, REBECCA SAENZ, M.D.'s most frequently prescribed drugs include Sertraline Hcl, Metformin Hcl, Synthroid. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does REBECCA SAENZ, M.D. accept Medicare?
REBECCA SAENZ, M.D. appears in CMS Medicare data with 208 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify REBECCA SAENZ, M.D.'s credentials?
REBECCA SAENZ, M.D.'s NPI is 1831173723 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology