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DR. MERVIN DE GUZMAN DIAZ MD
NPI 1548876121
General Practice in Humacao, PR

Active since September 19, 2020PECOS EnrolledAccepts Medicare Assignment
355 CALLE FONT MARTELO, HUMACAO, PR 00791(787) 852-0768 Get Directions Write a Review

NPPES record last updated: May 24, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 24, 2026, Sep 11, 2025, Jun 27, 2024 and 3 more (6 updates tracked since 2020).

About Dr. Mervin De Guzman Diaz Md NPPES

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

DR. MERVIN DE GUZMAN DIAZ MD (NPI 1548876121) is an individual general practice provider in Humacao, Puerto Rico, licensed in Puerto Rico (24685) and active in the NPI registry since September 2020. He is enrolled in Medicare PECOS, is affiliated with Ryder Memorial Hospital Inc, and is a graduate of Other (2020).

NPPES Registry Identity

NPI1548876121
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. MERVIN DE GUZMAN DIAZCredential: MD
Location Address355 CALLE FONT MARTELOHumacao, PR 00791-3249
Mailing AddressPo Box 59Fajardo, PR 00738-0059 · (787) 718-2715
Phone(787) 852-0768
Sole ProprietorYes
Medical School CMSOtherGraduated 2020
Enumeration DateSeptember 19, 2020
Last NPPES UpdateMay 24, 20266 updates tracked since enumeration
NPPES CertifiedMay 24, 2026
✔ NPI 1548876121 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in PR · 24685
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
Also ListedEmergency MedicineTaxonomy 207P00000X · License 24685 (PR)

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. Mervin De Guzman Diaz Md 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 ID8426546862
PECOS Enrollment IDI20251018000652
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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ryder Memorial Hospital Inc

Acute Care Hospitals · Humacao, PR
OwnershipVoluntary non-profit - Private
CMS Certification Number400007
Location355 Ave Font MarteloHumacao, PR 00791 · Humacao County
Emergency services

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SANDRA GONZALEZ RN
Registered Nurse
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 852-0768
DR. ANGEL DAVID AGOSTO RODRIGUEZ MD
General Practice
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 852-0768
JOSEAN SEPULVEDA MD
General Practice
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 852-0768
MRS. DAISY DEL CARMEN MALAVE RDA
Dental Assistant
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 248-2002
MISS INES SERRANO BHE
Counselor
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 852-0768
MR. CARMELO RIVERA LPN
Licensed Practical Nurse
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 852-0768
MRS. MARGARITA DELGADO
Case Manager/Care Coordinator
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (787) 733-0661
ER PED LLC
Pediatrics (Pediatric Emergency Medicine)
355 CALLE FONT MARTELO
HUMACAO, PR 00791
Humacao Municipio (939) 640-6008

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 Mervin De Guzman Diaz's NPI number?

The NPI number for Mervin De Guzman Diaz is 1548876121. It was assigned to this individual provider in the NPPES registry on September 19, 2020.

Where is Mervin De Guzman Diaz located?

Mervin De Guzman Diaz practices at 355 Calle Font Martelo, Humacao, PR 00791. The listed phone number is (787) 852-0768.

What is Mervin De Guzman Diaz's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Mervin De Guzman Diaz enrolled in Medicare?

Yes. Mervin De Guzman Diaz 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.

Is Mervin De Guzman Diaz affiliated with any hospitals?

According to CMS data, Mervin De Guzman Diaz is affiliated with Ryder Memorial Hospital Inc.

When was this NPI record last updated?

The NPPES record for Mervin De Guzman Diaz was last updated on May 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.