Lewis W. Lo, MD
Obstetrics & Gynecology Physician · Exton, PA
Lewis W. Lo, MD is an obstetrics & gynecology physician with a practice address in Exton, Pennsylvania, and NPI 1104110535, issued on Jun 2, 2011. Check the license (Pennsylvania MD453896, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Lewis W. Lo
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MD453896 PA
Self-reported in NPPES; status is on the state search - Practice location
- 728 W Lincoln Hwy FL 2, Exton, PA 19341
- Phone
- (610) 903-6200
- Enumerated
- Jun 2, 2011
- Record last updated
- Nov 12, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (610) 903-6201
- Medicare enrollment
- Enrolled (PECOS I20150504000807); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,974 in Pennsylvania → Look up another NPI →
Also registered at 728 W Lincoln Hwy FL 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Teri Benn, M.D.Obstetrics & Gynecology Physician1124256730
- Margaret Brown, CRNPObstetrics & Gynecology Nurse Practitioner1285768192
Verify Lewis W. Lo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD453896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
37 Medicare Part D claims for 20 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Clinical Care Associates OF The University OF Pennsylvania Health.Exton, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lewis W. Lo among 1,974 obstetrics & gynecology physician records in Pennsylvania
Lewis W. Lo, MD 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 2011, is newer than 61% of them.
- NPI issued2011 · 61% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2007 · median 2007 among the 1,176 with a school on file
- Record last updated2020 · 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).
Obstetrics & Gynecology Physician providers in Pennsylvania
There are 1,974 obstetrics & gynecology physician records in Pennsylvania.
All 1,974 in Pennsylvania → Every provider in Exton → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Teri Benn, M.D.Exton, PA 193411124256730
- Deborah Bieter Schultz, DOExton, PA 193411952336414
- Emily Burnett, DOExton, PA 193411659809101
- Carol Coldren, MDExton, PA 193411437120748
- Renee Hoffman, D.O.Exton, PA 193411295732667
- Eva Jiang, MDExton, PA 193411134574148
- Eduardo Mercurio, MDExton, PA 193411760515613
- Justin Sloane, M.D.Exton, PA 193411790198901
Common questions
What is Lewis W. Lo, MD's NPI number?
Lewis W. Lo, MD's National Provider Identifier (NPI) is 1104110535, issued on Jun 2, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Lewis W. Lo, MD located?
The NPPES record lists a practice address at 728 W Lincoln Hwy FL 2, Exton, PA, 19341. Phone: (610) 903-6200. Providers update this record themselves, so call before visiting.
How can I verify Lewis W. Lo, MD's license?
NPPES lists Pennsylvania license number MD453896, 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 Lewis W. Lo, MD prescribe under Medicare Part D?
In 2024, Lewis W. Lo, MD had 37 Medicare Part D claims for 20 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.