2026 NPPES data Family Medicine Physician NPI 1104808799 MD
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MARIA HERNANDEZ, MD

Family Medicine Physician in NARANJITO, 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
10K
Medicare Part D claims · 303 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARIA HERNANDEZ, MD filed 10,012 Medicare Part D claims in 2023 as a Family Medicine Physician in NARANJITO, Puerto Rico, prescribing 93% generic.

10K
Part D claims, 2023
93%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

MARIA HERNANDEZ, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

10,012 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

MARIA HERNANDEZ, MD 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).

What does the federal data show about MARIA HERNANDEZ, MD?

Quality data not reported

NPI registry status

Active

Issued 11/18/2005

NPI 1104808799

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

10,012 193% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in Puerto Rico

How Family Medicine Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Family Medicine Physician share within Puerto Rico

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

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

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

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine 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).

MARIA HERNANDEZ, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at CALLE IGNACIO MORALES ACOSTA 72, NARANJITO, PR, 00719, with a listed phone of (787) 869-0540. NPI 1104808799 was issued on 11/18/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HERNANDEZ 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 10,012 prescription claims written by this provider, covering 303 Medicare beneficiaries and totaling roughly $308K in drug spend, split 7% brand-name and 93% 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

CALLE IGNACIO MORALES ACOSTA 72
NARANJITO, PR 00719

Provider Details

NPI 1104808799
Specialty Family Medicine Physician
Credentials MD
Gender Female
NPI Issued 11/18/2005

Brand vs generic prescribing mix · Generic-heavy

MARIA HERNANDEZ, MD — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 10,012 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.

10,012
Total Claims
$308K
Total Drug Cost
303
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15,416
Total Day Supply
452,151
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$201K
Generic Drug Cost
$105K
Antibiotic Claims
117

Patient Demographics

Average Patient Age
73.0 years
Avg HCC Risk Score
1.41
Gender Split
60% female / 40% male
Age Distribution
<65: 47, 65-74: 130, 75-84: 85, 85+: 41

Top Prescribed Drugs (Medicare Part D)

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

What MARIA HERNANDEZ, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Atorvastatin Calcium
777
Levothyroxine Sodium
712
Metformin Hcl
574
Alendronate Sodium
558
Gabapentin
550
Amlodipine Besylate
445
Rosuvastatin Calcium
431
Lisinopril
372
Montelukast Sodium
356
Irbesartan-Hydrochlorothiazide
Irbesartan/Hydrochlorothiazide
307

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

Family Medicine Physician Overview

How MARIA HERNANDEZ, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

MARIA HERNANDEZ, MD's 10,012 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Puerto Rico

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

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARIA HERNANDEZ, MD's specialty?
MARIA HERNANDEZ, MD specializes in Family Medicine Physician and practices in NARANJITO, Puerto Rico. Credentials: MD.
How much does MARIA HERNANDEZ, MD prescribe under Medicare Part D?
In 2023, MARIA HERNANDEZ, MD wrote 10,012 Medicare Part D claims totaling $308K in drug costs for 303 beneficiaries.
Where is MARIA HERNANDEZ, MD located?
MARIA HERNANDEZ, MD is located at CALLE IGNACIO MORALES ACOSTA 72, NARANJITO, PR, 00719. Phone: (787) 869-0540.
What is MARIA HERNANDEZ, MD's NPI number?
MARIA HERNANDEZ, MD's National Provider Identifier (NPI) is 1104808799, issued on 11/18/2005.
Does MARIA HERNANDEZ, MD prescribe more brand-name or generic drugs?
MARIA HERNANDEZ, MD's prescribing is 7% brand-name and 93% generic drugs by claim count, with $201K in brand drug costs.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does MARIA HERNANDEZ, MD prescribe most often?
Based on 2023 Medicare Part D data, MARIA HERNANDEZ, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARIA HERNANDEZ, MD accept Medicare?
MARIA HERNANDEZ, MD appears in CMS Medicare data with 10,012 Part D claims and 303 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARIA HERNANDEZ, MD's credentials?
MARIA HERNANDEZ, MD's NPI is 1104808799 with credentials MD. 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