2026 NPPES data Anatomic Pathology & Clinical Pathology Physician NPI 1174567036 M.D.
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JUAN FONTANEZ, M.D.

Anatomic Pathology & Clinical Pathology Physician in HATO REY, 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
58
Medicare Part D claims · Anatomic Pathology & Clinical Pathology Physician avg: 284
What the federal data reveals: JUAN FONTANEZ, M.D. is a Anatomic Pathology & Clinical Pathology Physician ([object Object]) practicing in HATO REY, Puerto Rico with a Medicare Part D prescribing footprint of 58 claims .

What stands out: JUAN FONTANEZ, M.D. filed 58 Medicare Part D claims in 2023 across HATO REY, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JUAN FONTANEZ, 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).

JUAN FONTANEZ, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/15/2006

NPI 1174567036

Primary specialty

Anatomic Pathology & Clinical Pathology Physician

Mid-sized

13,692 US NPIs in this specialty

Medicare Part D claims

58 80% vs specialty avg

2023 prescription claims

Specialty avg: 284

Specialty distribution in Puerto Rico

How Anatomic Pathology & Clinical Pathology Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Anatomic Pathology & Clinical Pathology Physician share within Puerto Rico

1. Anatomic Pathology & Clinical Pathology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Anatomic Pathology & Clinical Pathology Physician share within Puerto Rico

Specialty board-certification context

Estimated specialty board-certified rate — Anatomic Pathology & Clinical Pathology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Anatomic Pathology & Clinical Pathology Physician ABMS/AOA estimate

Est. board-certified rate (Anatomic Pathology & Clinical Pathology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Anatomic Pathology & Clinical Pathology 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).

JUAN FONTANEZ, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider practicing in HATO REY, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1174567036. 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.

JUAN FONTANEZ, M.D. appears in the CMS NPPES registry as a Anatomic Pathology & Clinical Pathology Physician provider holding M.D. credentials at 99 CALLE PONCE, HATO REY, PR, 00917, with a listed phone of (787) 407-2799. NPI 1174567036 was issued on 06/15/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FONTANEZ 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 58 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $2K in drug spend. 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.

Anatomic Pathology & Clinical Pathology Physician is a mid-sized specialty nationwide, with 13,692 enrolled providers across 55 states and an average of 284 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

99 CALLE PONCE
HATO REY, PR 00917

Provider Details

NPI 1174567036
Specialty Anatomic Pathology & Clinical Pathology Physician
Credentials M.D.
Gender Male
NPI Issued 06/15/2006

Medicare Part D Prescribing Data

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

58
Total Claims
$2K
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
58
Total Day Supply
1,724
Generic Drug Cost
$562

Patient Demographics

Average Patient Age
94.0 years
Avg HCC Risk Score
1.31

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Rivastigmine
12
Memantine Hcl
11

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

Anatomic Pathology & Clinical Pathology Physician Overview

How JUAN FONTANEZ, M.D. fits within the Anatomic Pathology & Clinical Pathology Physician landscape nationally.

13,692
Anatomic Pathology & Clinical Pathology Physician Providers in US
55
States with Anatomic Pathology & Clinical Pathology Physician
284
Avg Claims per Provider

JUAN FONTANEZ, M.D.'s 58 claims are below the specialty average of 284.

Nearby Anatomic Pathology & Clinical Pathology Physician Providers in Puerto Rico

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

Compare Anatomic Pathology & Clinical Pathology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JUAN FONTANEZ, M.D.'s specialty?
JUAN FONTANEZ, M.D. specializes in Anatomic Pathology & Clinical Pathology Physician and practices in HATO REY, Puerto Rico. Credentials: M.D..
How much does JUAN FONTANEZ, M.D. prescribe under Medicare Part D?
In 2023, JUAN FONTANEZ, M.D. wrote 58 Medicare Part D claims totaling $2K in drug costs for N/A beneficiaries.
Where is JUAN FONTANEZ, M.D. located?
JUAN FONTANEZ, M.D. is located at 99 CALLE PONCE, HATO REY, PR, 00917. Phone: (787) 407-2799.
What is JUAN FONTANEZ, M.D.'s NPI number?
JUAN FONTANEZ, M.D.'s National Provider Identifier (NPI) is 1174567036, issued on 06/15/2006.
How many Anatomic Pathology & Clinical Pathology Physician providers are there in the US?
There are 13,692 Anatomic Pathology & Clinical Pathology Physician providers across 55 states in the US. The average Anatomic Pathology & Clinical Pathology Physician provider writes 284 Medicare Part D claims per year.
What drugs does JUAN FONTANEZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JUAN FONTANEZ, M.D.'s most frequently prescribed drugs include Rivastigmine, Memantine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JUAN FONTANEZ, M.D. accept Medicare?
JUAN FONTANEZ, M.D. appears in CMS Medicare data with 58 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JUAN FONTANEZ, M.D.'s credentials?
JUAN FONTANEZ, M.D.'s NPI is 1174567036 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