Isaac William Hammond, M.D.
Internal Medicine Physician · Chadds Ford, PA
Isaac William Hammond, M.D. is an internal medicine physician with a practice address in Chadds Ford, Pennsylvania, and NPI 1649475674, issued on Jun 19, 2007. Check the license (Pennsylvania MD418525, as entered in NPPES) on the Pennsylvania Department of State (PALS); the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Isaac William Hammond
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD418525 PA
Self-reported in NPPES; status is on the state search - Practice location
- 16 Wilderness Way, Chadds Ford, PA 19317
- Phone
- (610) 459-7710
- Enumerated
- Jun 19, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (610) 459-7754
- Medicaid IDs
- 0112036 MS
1937550 LA - Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Verify Isaac William Hammond in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD418525Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Isaac William Hammond among 7,300 internal medicine physician records in Pennsylvania
Isaac William Hammond, 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 not. Its NPI, issued in 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 57% newer
- In a Medicare fileNo · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2007 · 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).
2 internal medicine physician records list a practice address in Chadds Ford
They are 2 of the 185 NPPES records with a practice address in Chadds Ford, and 7,300 internal medicine physician records in Pennsylvania. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,300 in Pennsylvania → Every provider in Chadds Ford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Maia Tinder, MDChadds Ford, PA 193171902361363
- Sunila Byreddy, MDCoatesville, PA 193201275594541
- Sheila Chellappa, M.D.Coatesville, PA 193201235144999
- Lisette Cooper, MDCoatesville, PA 193201104800770
- Indranee Elanchenny, M.DCoatesville, PA 193201003804501
- Kenneth Goldblum, MDCoatesville, PA 193201134188964
- Phuoc Le, MDCoatesville, PA 193201548221286
- Qin Li, MDCoatesville, PA 193201902822950
Common questions
What is Isaac William Hammond, M.D.'s NPI number?
Isaac William Hammond, M.D.'s National Provider Identifier (NPI) is 1649475674, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Isaac William Hammond, M.D. located?
The NPPES record lists a practice address at 16 Wilderness Way, Chadds Ford, PA, 19317. Phone: (610) 459-7710. Providers update this record themselves, so call before visiting.
How can I verify Isaac William Hammond, M.D.'s license?
NPPES lists Pennsylvania license number MD418525, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.