George Isajiw, M.D.
Internal Medicine Physician · Lansdowne, PA
George Isajiw, M.D. is an internal medicine physician with a practice address in Lansdowne, Pennsylvania, and NPI 1861509135, issued on Aug 24, 2006. Check the license (Pennsylvania MD012611E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- George Isajiw
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD012611E PA
Self-reported in NPPES; status is on the state search - Practice location
- 23 N Lansdowne Ave, Lansdowne, PA 19050
- Phone
- (610) 626-4397
- Enumerated
- Aug 24, 2006
- Record last updated
- Oct 31, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20031203000184); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1970
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Verify George Isajiw in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD012611ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% more Medicare Part D claims than the average internal medicine physician in 2024
4,583 Medicare Part D claims for 221 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 308 claims were for opioids.
Most prescribed
- Telmisartan172 claims
- Rosuvastatin Calcium166 claims
- Hydrochlorothiazide135 claims
- Famotidine131 claims
- Atorvastatin Calcium124 claims
- Levothyroxine Sodium117 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: $536.33
22 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
George Isajiw among 7,300 internal medicine physician records in Pennsylvania
George Isajiw, M.D. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1970 · median 2008 among the 4,208 with a school on file
- Record last updated2013 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Internal Medicine Physician providers in Pennsylvania
There are 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Lansdowne → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Courtney Acker, M.D.Langhorne, PA 190471700450392
- Rasha Al-HashimiLanghorne, PA 190471598455917
- Barbara Bix, MDFeasterville Trevose, PA 190531194749630
- John Cacchio, MDLanghorne, PA 190471649808932
- Kayla GarleyLanghorne, PA 190471447953799
- Rachita GuptaLanghorne, PA 190471568307296
- Garrett Jenkins, DOLanghorne, PA 190471538009626
- Maria Kelley, MDLanghorne, PA 190471144923384
Common questions
What is George Isajiw, M.D.'s NPI number?
George Isajiw, M.D.'s National Provider Identifier (NPI) is 1861509135, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is George Isajiw, M.D. located?
The NPPES record lists a practice address at 23 N Lansdowne Ave, Lansdowne, PA, 19050. Phone: (610) 626-4397. Providers update this record themselves, so call before visiting.
How can I verify George Isajiw, M.D.'s license?
NPPES lists Pennsylvania license number MD012611E, 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 George Isajiw, M.D. prescribe under Medicare Part D?
In 2024, George Isajiw, M.D. had 4,583 Medicare Part D claims for 221 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.