What is Antonio Diaz Hernandez's NPI number?

Antonio Diaz Hernandez's National Provider Identifier (NPI) is 1003016775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Antonio Diaz Hernandez's specialty?

Antonio Diaz Hernandez is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).

Where is Antonio Diaz Hernandez located?

Antonio Diaz Hernandez's practice location on file with NPPES is 1492 Ave La Constitucion Suite 717, San Juan, PR 00907-9570.

What is Antonio Diaz Hernandez's phone number?

The practice phone number listed in the NPPES registry for Antonio Diaz Hernandez is (787) 723-5017.

Does Antonio Diaz Hernandez accept Medicare?

Antonio Diaz Hernandez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Antonio Diaz Hernandez's NPI active?

Yes — Antonio Diaz Hernandez's NPI (1003016775) is active in the NPPES registry as of the last update on 2022-10-26.

IndividualActiveAccepts Medicare

Antonio Diaz Hernandez, MD

NPI 1003016775 · Nephrology Physician · San Juan, PR

Antonio Diaz Hernandez, MD is a Nephrology Physician provider in San Juan, PR (NPI 1003016775).

Provider details

NPI number: 1003016775
Entity type: Individual
Primary specialty: Nephrology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 26095 (PR)

Practice location

1492 Ave La Constitucion Suite 717

Edificio Centro Europa

San Juan, PR 00907-9570

Phone: (787) 723-5017

More PR providers

Mailing address

La Sierra Del Rio

San Juan, PR 00926-4331

Specialties & taxonomies

Nephrology PhysicianPrimary207RN0300XLicense 17173 (PR)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense 26095 (PR)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(69/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
19 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
62 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 methodology.

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)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	40	$64
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	22	$60

Typical Medicare-allowed amounts for these services range $60–$64 (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 · 36 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Calcium Acetate	203	35
Sevelamer Carbonate	193	28
Sodium Zirconium Cyclosilicatebrand: Lokelma	135	24
Gabapentin	92	25
Lanthanum Carbonate	87	17
Dapagliflozin Propanediolbrand: Farxiga	74	27
Hydralazine Hcl	60	16

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$404 across 11 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.

Enumerated: 2007-07-20
Last updated: 2022-10-26
Certified: 2022-10-20

Frequently asked questions

What is Antonio Diaz Hernandez's NPI number?: Antonio Diaz Hernandez's National Provider Identifier (NPI) is 1003016775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Antonio Diaz Hernandez's specialty?: Antonio Diaz Hernandez is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
Where is Antonio Diaz Hernandez located?: Antonio Diaz Hernandez's practice location on file with NPPES is 1492 Ave La Constitucion Suite 717, San Juan, PR 00907-9570.
What is Antonio Diaz Hernandez's phone number?: The practice phone number listed in the NPPES registry for Antonio Diaz Hernandez is (787) 723-5017.
Does Antonio Diaz Hernandez accept Medicare?: Antonio Diaz Hernandez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Antonio Diaz Hernandez's NPI active?: Yes — Antonio Diaz Hernandez's NPI (1003016775) is active in the NPPES registry as of the last update on 2022-10-26.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

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)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	40	$64
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	22	$60

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 36 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Calcium Acetate	203	35
Sevelamer Carbonate	193	28
Sodium Zirconium Cyclosilicatebrand: Lokelma	135	24
Gabapentin	92	25
Lanthanum Carbonate	87	17
Dapagliflozin Propanediolbrand: Farxiga	74	27
Hydralazine Hcl	60	16

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$404 across 11 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments