ALLERGY AND ASTHMA CENTER PC
NPI 1851338024
Allergy & Immunology - Allergy in Lancaster, PA

Q: What is Allergy And Asthma Center PC's NPI number?

The NPI number for Allergy And Asthma Center PC is 1851338024. It was assigned to this organization in the NPPES registry on May 31, 2006. The provider was formerly known as Allergy Immunology Associates Ltd.

Q: What is Allergy And Asthma Center PC's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Active since May 31, 2006CLIA 39D0668746 · Microscopy

2445 MARIETTA AVE, ALLERGY & ASTHMA CENTER, LANCASTER, PA 17601(717) 393-1365(717) 393-8540 Get Directions Write a Review

NPPES record last updated: October 7, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Allergy And Asthma Center Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ALLERGY AND ASTHMA CENTER PC (NPI 1851338024), doing business as Allergy Immunology Associates Ltd, is a healthcare organization registered as an allergy in Lancaster, Pennsylvania and active in the NPI registry since May 2006. The organization holds a CLIA Microscopy certificate valid through September 15, 2027 and lists Mark J Titi, Md/president, as its authorized official.

NPPES Registry Identity

NPI1851338024

Entity TypeOrganization

Primary Taxonomy207KA0200X

Legal Business NameALLERGY AND ASTHMA CENTER PC

Location Address2445 MARIETTA AVE, ALLERGY & ASTHMA CENTERLancaster, PA 17601-1942

Mailing Address2445 Marietta AveLancaster, PA 17601-1942 · (717) 393-1365 · Fax (717) 393-8540

Phone(717) 393-1365

Fax(717) 393-8540

Organization SubpartNo

Authorized OfficialMark J TitiMd/president · (717) 393-1365

Enumeration DateMay 31, 2006

Last NPPES UpdateOctober 7, 2014

✔ NPI 1851338024 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & Immunology · AllergyAllopathic & Osteopathic Physicians

Taxonomy Code207KA0200X

Definition

A physician who specializes in the diagnosis, treatment, and management of allergies. Source: National Uniform Claim Committee

2445 MARIETTA AVE, Lancaster, PA 17601

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Other Names 1

Former Legal Business NameAllergy Immunology Associates Ltd

Other Identifiers 13

Medicaid001166684PA

Other1519640Gateway

Other30108Amerihealth Mercy

Other117194Unison

Other0038794000Keystone Health Plan East

Other02470900Capital Bluecross

Other3650Geisinger Health Plan

Other0038794000Amerihealth

Other248732Mamsi

Medicare ID-Type Unspecified0185965PA

Other0185965Highmark Blueshield

Other02470900Keystone Health Plan Ctrl

Other61743Aetna

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Allergy And Asthma Center Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to Allergy And Asthma Center PC, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Stephen Lockey, MD

Allergy/Immunology

NPI 1649269416

2445 MARIETTA AVE
Lancaster, PA 17601

(717) 393-1365

✔ PECOS✔ Accepts MedicareSame address

Mark Titi, MD

Allergy/Immunology

NPI 1649268525

2445 MARIETTA AVE
Lancaster, PA 17601

(717) 393-1365

✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 39D0668746

Allergy And Asthma Center PC · Lancaster, PA

Active · expires Sep 15, 2027

CLIA Number39D0668746

Laboratory TypePhysician Office

Certificate Effective DateSeptember 16, 2025

Certificate Expiration DateSeptember 15, 2027

Laboratory DirectorDr. Stephen D. Lockey III

Laboratory Phone(717) 393-1365

Laboratory LocationAllergy And Asthma Center PC2445 Marietta Avenue, Lancaster, PA 17601

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Allergy And Asthma Center PC's NPI number?

The NPI number for Allergy And Asthma Center PC is 1851338024. It was assigned to this organization in the NPPES registry on May 31, 2006. The provider was formerly known as Allergy Immunology Associates Ltd.

Where is Allergy And Asthma Center PC located?

Allergy And Asthma Center PC is located at 2445 Marietta Ave Allergy & Asthma Center, Lancaster, PA 17601. The listed phone number is (717) 393-1365.

What is Allergy And Asthma Center PC's specialty?

The primary specialty registered for this NPI is Allergy & Immunology, specializing in Allergy, with taxonomy code 207KA0200X.

Is Allergy And Asthma Center PC enrolled in Medicare?

Yes. Allergy And Asthma Center PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Allergy And Asthma Center PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Allergy/Immunology, reassign their Medicare billing to Allergy And Asthma Center PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Allergy And Asthma Center PC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 39D0668746) is associated with this NPI, valid through September 15, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Allergy And Asthma Center PC was last updated on October 7, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.