What is John De Leon's NPI number?

John De Leon's National Provider Identifier (NPI) is 1174280028, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John De Leon's specialty?

John De Leon is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).

Where is John De Leon located?

John De Leon's practice location on file with NPPES is 10134 River Rd, Potomac, MD 20854-4903.

What is John De Leon's phone number?

The practice phone number listed in the NPPES registry for John De Leon is (240) 715-5866.

Is John De Leon's NPI active?

Yes — John De Leon's NPI (1174280028) is active in the NPPES registry as of the last update on 2021-11-25.

IndividualActive

John De Leon

NPI 1174280028 · Pharmacist · Potomac, MD

John De Leon is a Pharmacist provider in Potomac, MD (NPI 1174280028).

Provider details

NPI number: 1174280028
Entity type: Individual
Primary specialty: PharmacistPharmacy Service Providers
Sex: Male
Sole proprietor: No
License: 129454 (MD)

Practice location

10134 River Rd

Potomac, MD 20854-4903

Phone: (240) 715-5866

Street-level locationGet directions

More MD providers

Mailing address

10134 River Rd

Potomac, MD 20854-4903

Specialties & taxonomies

PharmacistPrimary183500000XLicense 129454 (MD)
Pharmacy Service Providers

Profile Score

Established profile(62/100 index)

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

Registry tenure38% of score
4 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

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 prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Rsvpref3 Antigen/As01e/Pfbrand: Arexvy	23	23
Varicella-Zoster Ge/As01b/Pfbrand: Shingrix	23	23
Rsv Vacc, Pref a and Pref B/Pfbrand: Abrysvo	17	17

Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do not include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.

Enumerated: 2021-11-25
Last updated: 2021-11-25
Certified: 2021-11-25

Frequently asked questions

What is John De Leon's NPI number?: John De Leon's National Provider Identifier (NPI) is 1174280028, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John De Leon's specialty?: John De Leon is listed in the NPPES registry with a primary specialty of Pharmacist (Pharmacy Service Providers).
Where is John De Leon located?: John De Leon's practice location on file with NPPES is 10134 River Rd, Potomac, MD 20854-4903.
What is John De Leon's phone number?: The practice phone number listed in the NPPES registry for John De Leon is (240) 715-5866.
Is John De Leon's NPI active?: Yes — John De Leon's NPI (1174280028) is active in the NPPES registry as of the last update on 2021-11-25.

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

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

What this provider prescribes (Medicare Part D)

Frequently asked questions