2026 NPPES data Pharmacist NPI 1942597604 RPH
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WANDA DIAZ, RPH

Pharmacist in BAYAMON, 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
213
Medicare Part D claims · 158 beneficiaries · Pharmacist avg: 135
Generic prescribing
3%
generic claims · 97% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

WANDA DIAZ, RPH filed 213 Medicare Part D claims in 2023 as a Pharmacist in BAYAMON, Puerto Rico, prescribing 3% generic.

213
Part D claims, 2023
3%
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.

WANDA DIAZ, RPH's Medicare Part D volume vs every U.S. prescriber

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

213 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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

What does the federal data show about WANDA DIAZ, RPH?

Quality data not reported

NPI registry status

Active

Issued 07/01/2011

NPI 1942597604

Primary specialty

Pharmacist

High-volume

290,447 US NPIs in this specialty

Medicare Part D claims

213 58% vs specialty avg

2023 prescription claims

Specialty avg: 135

Specialty distribution in Puerto Rico

How Pharmacist compares to other specialties among Puerto Rico providers

Puerto Rico providers

Pharmacist share within Puerto Rico

1. Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pharmacist share within Puerto Rico

Specialty board-certification context

Estimated specialty board-certified rate — Pharmacist (ABMS / AOA reference)

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

Est. board-certified rate (Pharmacist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pharmacist) — 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).

WANDA DIAZ, RPH appears in the CMS NPPES registry as a Pharmacist provider holding RPH credentials at FARMACIA WALGREENS 12652, BAYAMON, PR, 00956, with a listed phone of (787) 797-8705. NPI 1942597604 was issued on 07/01/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIAZ 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 213 prescription claims written by this provider, covering 158 Medicare beneficiaries and totaling roughly $45K in drug spend, split 97% brand-name and 3% 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.

Pharmacist is a high-volume specialty nationwide, with 290,447 enrolled providers across 56 states and an average of 135 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

FARMACIA WALGREENS 12652
BAYAMON, PR 00956

Provider Details

NPI 1942597604
Specialty Pharmacist
Credentials RPH
Gender Female
NPI Issued 07/01/2011

Brand vs generic prescribing mix · Brand-heavy

WANDA DIAZ, RPH — brand share 97.0%
Specialty average (est.)

97% brand-name claims vs 3% generic, on 213 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.

213
Total Claims
$45K
Total Drug Cost
158
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
215
Total Day Supply
393
Brand vs Generic
97% brand / 3% generic
Brand Drug Cost
$45K

Patient Demographics

Average Patient Age
74.2 years
Avg HCC Risk Score
1.73
Gender Split
52% female / 48% male
Age Distribution
<65: 14, 65-74: 70, 75-84: 59, 85+: 15

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Shingrix
Varicella-Zoster Ge/As01b/Pf
106
Arexvy
Rsvpref3 Antigen/As01e/Pf
40
Abrysvo
"Rsv Vacc
N/A
Boostrix Tdap
"Diphth
N/A

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

Pharmacist Overview

How WANDA DIAZ, RPH fits within the Pharmacist landscape nationally.

290,447
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider

WANDA DIAZ, RPH's 213 claims are above the specialty average of 135.

Nearby Pharmacist Providers in Puerto Rico

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

Compare Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is WANDA DIAZ, RPH's specialty?
WANDA DIAZ, RPH specializes in Pharmacist and practices in BAYAMON, Puerto Rico. Credentials: RPH.
How much does WANDA DIAZ, RPH prescribe under Medicare Part D?
In 2023, WANDA DIAZ, RPH wrote 213 Medicare Part D claims totaling $45K in drug costs for 158 beneficiaries.
Where is WANDA DIAZ, RPH located?
WANDA DIAZ, RPH is located at FARMACIA WALGREENS 12652, BAYAMON, PR, 00956. Phone: (787) 797-8705.
What is WANDA DIAZ, RPH's NPI number?
WANDA DIAZ, RPH's National Provider Identifier (NPI) is 1942597604, issued on 07/01/2011.
Does WANDA DIAZ, RPH prescribe more brand-name or generic drugs?
WANDA DIAZ, RPH's prescribing is 97% brand-name and 3% generic drugs by claim count, with $45K in brand drug costs.
How many Pharmacist providers are there in the US?
There are 290,447 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does WANDA DIAZ, RPH prescribe most often?
Based on 2023 Medicare Part D data, WANDA DIAZ, RPH's most frequently prescribed drugs include Shingrix, Arexvy, Abrysvo. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WANDA DIAZ, RPH accept Medicare?
WANDA DIAZ, RPH appears in CMS Medicare data with 213 Part D claims and 158 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WANDA DIAZ, RPH's credentials?
WANDA DIAZ, RPH's NPI is 1942597604 with credentials RPH. 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