A. Geoffrey Didario, MD
Allergy & Immunology Physician · Ardmore, PA
A. Geoffrey Didario, MD is an allergy & immunology physician with a practice address in Ardmore, Pennsylvania, and NPI 1336282870, issued on Feb 15, 2007. Check the license (Pennsylvania MD426432, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- A. Geoffrey Didario
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- MD426432 PA
Self-reported in NPPES; status is on the state search - Practice location
- 233 E Lancaster Ave, Ardmore, PA 19003
- Phone
- (610) 642-1643
- Enumerated
- Feb 15, 2007
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (610) 642-0245
- Medicare enrollment
- Enrolled (PECOS I20070605000419); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 183 in Pennsylvania → Look up another NPI →
Also registered at 233 E Lancaster Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Yasmin Areida, MD, MS, CNSNutrition Education Nutritionist1407677552
- Alene Bender Herman, MSN, CRNPAmbulatory Women's Health Care Registered Nurse1902160088
- Karen Berberian, PH.D.Psychologist1760496277
- Marc Cotler, M.D.Allergy Physician1942305081
- Tara Gannon, DPTPhysical Therapist1467838466
Verify A. Geoffrey Didario in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD426432Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
320 Medicare Part D claims for 39 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Montelukast Sodium43 claims
- Albuterol Sulfate Hfa28 claims
- Fluticasone Propionate28 claims
- Advair Hfa25 claims
- Azelastine Hcl19 claims
- Fluticasone-Salmeterol18 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,628.17
72 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Main Line Allergy , L.L.P.Ardmore, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
A. Geoffrey Didario among 183 allergy & immunology physician records in Pennsylvania
A. Geoffrey Didario, MD is one of 183 allergy & immunology physician records with a practice address in Pennsylvania. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 36% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1997 · median 2000 among the 109 with a school on file
- Record last updated2021 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 allergy & immunology physician records list a practice address in Ardmore
They are 6 of the 284 NPPES records with a practice address in Ardmore, and 183 allergy & immunology physician records in Pennsylvania.
All 183 in Pennsylvania → Every provider in Ardmore → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Janet BeausoleilArdmore, PA 190031639199912
- Jack Becker, MDArdmore, PA 190031851349955
- Jennifer Kannan, MDArdmore, PA 190031740589993
- Sharon Sweinberg, MDArdmore, PA 190031285680025
- Ruthven Wodell, MDArdmore, PA 190031295780567
- Denise Diprimio Kalman, DOUpland, PA 190131912018136
- Sandra Gawchik, DOUpland, PA 190131578608204
- Alyson Simpson, MDGladwyne, PA 190351538288162
Common questions
What is A. Geoffrey Didario, MD's NPI number?
A. Geoffrey Didario, MD's National Provider Identifier (NPI) is 1336282870, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is A. Geoffrey Didario, MD located?
The NPPES record lists a practice address at 233 E Lancaster Ave, Ardmore, PA, 19003. Phone: (610) 642-1643. Providers update this record themselves, so call before visiting.
How can I verify A. Geoffrey Didario, MD's license?
NPPES lists Pennsylvania license number MD426432, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does A. Geoffrey Didario, MD prescribe under Medicare Part D?
In 2024, A. Geoffrey Didario, MD had 320 Medicare Part D claims for 39 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.