Dana S. Mahlab, D.O.
Obstetrics & Gynecology Physician · Horsham, PA
Dana S. Mahlab, D.O. is an obstetrics & gynecology physician with a practice address in Horsham, Pennsylvania, and NPI 1538320783, issued on Jun 20, 2008. Check the license (Pennsylvania OS015686, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Dana S. Mahlab
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- OS015686 PA
25MB09085900 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 300 Welsh RD Bldg 2, Horsham, PA 19044
- Phone
- (215) 657-8430
- Enumerated
- Jun 20, 2008
- Record last updated
- Sep 15, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (215) 657-8439
- Medicare enrollment
- Enrolled (PECOS I20130109000023); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2008
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →
Also registered at 300 Welsh RD Bldg 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nidhi Agrawal, M.D.Pain Medicine (Anesthesiology) Physician1043625726
- Renata Estes, CRNPWomen's Health Nurse Practitioner1891031076
- Nancy Galella, MDObstetrics & Gynecology Physician1295730729
Verify Dana S. Mahlab in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS015686Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
60 Medicare Part D claims for 21 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol21 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: $293.63
12 payments; by number, the most common kind was food and beverage; the largest payer was Shield Therapeutics Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Regional Womens Health Group LLCAbington, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dana S. Mahlab among 1,974 obstetrics & gynecology physician records in Pennsylvania
Dana S. Mahlab, D.O. is one of 1,974 obstetrics & gynecology physician records with a practice address in Pennsylvania. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 51% of them.
- NPI issued2008 · 51% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2008 · median 2007 among the 1,176 with a school on file
- Record last updated2017 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 obstetrics & gynecology physician records list a practice address in Horsham
They are 11 of the 505 NPPES records with a practice address in Horsham, and 1,974 obstetrics & gynecology physician records in Pennsylvania.
All 1,974 in Pennsylvania → Every provider in Horsham → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Janee Fonslick, MDHorsham, PA 190441891790317
- Nancy Galella, MDHorsham, PA 190441295730729
- Miriam Harden, MDHorsham, PA 190441134105208
- Upasana MadanHorsham, PA 190441104321702
- Maritza Martinez, MDHorsham, PA 190441043216377
- Amory Meigs, MDHorsham, PA 190441982670436
- Alice Roberts, MDHorsham, PA 190441285630665
- Philip Sih, MDHorsham, PA 190441073510186
Common questions
What is Dana S. Mahlab, D.O.'s NPI number?
Dana S. Mahlab, D.O.'s National Provider Identifier (NPI) is 1538320783, issued on Jun 20, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Dana S. Mahlab, D.O. located?
The NPPES record lists a practice address at 300 Welsh RD Bldg 2, Horsham, PA, 19044. Phone: (215) 657-8430. Providers update this record themselves, so call before visiting.
How can I verify Dana S. Mahlab, D.O.'s license?
NPPES lists Pennsylvania license number OS015686, 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 Dana S. Mahlab, D.O. prescribe under Medicare Part D?
In 2024, Dana S. Mahlab, D.O. had 60 Medicare Part D claims for 21 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.