What is John Longley's NPI number?

John Longley's National Provider Identifier (NPI) is 1053315317, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Longley's specialty?

John Longley is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).

Where is John Longley located?

John Longley's practice location on file with NPPES is 20 E Timonium Rd, Timonium, MD 21093-3456.

What is John Longley's phone number?

The practice phone number listed in the NPPES registry for John Longley is (410) 308-4880.

Is John Longley's NPI active?

Yes — John Longley's NPI (1053315317) is active in the NPPES registry as of the last update on 2007-07-08.

IndividualActive

John Longley, D.D.S.

NPI 1053315317 · General Practice Dentistry · Timonium, MD

John Longley, D.D.S. is a General Practice Dentistry provider in Timonium, MD (NPI 1053315317).

Provider details

NPI number: 1053315317
Entity type: Individual
Primary specialty: General Practice DentistryDental Providers
Credential: D.D.S.
Sex: Male
License: 13371 (MD)

Practice location

20 E Timonium Rd

Ste 210

Timonium, MD 21093-3456

Phone: (410) 308-4880

Fax: (410) 308-4883

Street-level locationGet directions

More MD providers

Mailing address

118 Bosley Ave

Cockeysville Hunt Valley, MD 21030-2334

Specialties & taxonomies

General Practice DentistryPrimary1223G0001XLicense 13371 (MD)
Dental Providers

Profile Score

Detailed profile(91/100 index)

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

Registry tenure38% of score
21 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 · 4 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass	26	23
Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen	18	18
Amoxicillin	18	15
Azithromycin	15	15

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: 2005-06-01
Last updated: 2007-07-08

Frequently asked questions

What is John Longley's NPI number?: John Longley's National Provider Identifier (NPI) is 1053315317, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Longley's specialty?: John Longley is listed in the NPPES registry with a primary specialty of General Practice Dentistry (Dental Providers).
Where is John Longley located?: John Longley's practice location on file with NPPES is 20 E Timonium Rd, Timonium, MD 21093-3456.
What is John Longley's phone number?: The practice phone number listed in the NPPES registry for John Longley is (410) 308-4880.
Is John Longley's NPI active?: Yes — John Longley's NPI (1053315317) is active in the NPPES registry as of the last update on 2007-07-08.

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