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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARTA DIAZ NATER M.D.
NPI 1922048206
Internal Medicine in San Juan, PR

Active since June 07, 2006PECOS Enrolled
369 CALLE JOSE DE DIEGO, OFICINA 301, SAN JUAN, PR 00923(787) 756-4646 Get Directions Write a Review

NPPES record last updated: October 20, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Marta Diaz Nater M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARTA DIAZ NATER M.D. (NPI 1922048206) is an individual internal medicine provider in San Juan, Puerto Rico, licensed in Puerto Rico (13331) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of University Central Del Caribe Escuela De Medicina (1997).

NPPES Registry Identity

NPI1922048206
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. MARTA DIAZ NATERCredential: M.D.
Location Address369 CALLE JOSE DE DIEGO, OFICINA 301San Juan, PR 00923
Mailing Address369 Calle Jose De Diego, Oficina 301San Juan, PR 00923 · (787) 756-4646
Phone(787) 756-4646
Sole ProprietorYes
Medical School CMSUniversity Central Del Caribe Escuela De MedicinaGraduated 1997
Enumeration DateJune 7, 2006
Last NPPES UpdateOctober 20, 2026
NPPES CertifiedOctober 16, 2026
✔ NPI 1922048206 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in PR · 13331
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Marta Diaz Nater M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1759358617
PECOS Enrollment IDI20040911000102
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00923 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$130.65 typical visit price
range $56.86 – $172.44
Typical copayment $32.66 (range $14.21 – $43.11)
Most-billed visit code 99204
Established Patient
$100.24 typical visit price
range $18.24 – $140.44
Typical copayment $25.06 (range $4.56 – $35.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marta Diaz Nater's NPI number?

The NPI number for Marta Diaz Nater is 1922048206. It was assigned to this individual provider in the NPPES registry on June 7, 2006.

Where is Marta Diaz Nater located?

Marta Diaz Nater practices at 369 Calle Jose De Diego, Oficina 301, San Juan, PR 00923. The listed phone number is (787) 756-4646.

What is Marta Diaz Nater's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Marta Diaz Nater enrolled in Medicare?

Yes. Marta Diaz Nater is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Marta Diaz Nater was last updated on October 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.