PHILIP DONALD ISHERWOOD M.D.
NPI 1497781611
Family Medicine - Addiction Medicine in Shreveport, LA
About Philip Donald Isherwood M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PHILIP DONALD ISHERWOOD M.D. (NPI 1497781611) is an individual addiction medicine provider in Shreveport, Louisiana, licensed in Louisiana (13714R) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (1992).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Philip Donald Isherwood M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Philip Isherwood reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Bossier City, LA 71111
- Reassigned Medicare billing, Louisiana enrollment
- 12 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 71103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SHREVEPORT, LA 71103
SHREVEPORT, LA 71103
SHREVEPORT, LA 71103
SHREVEPORT, LA 71103
SHREVEPORT, LA 71103
SHREVEPORT, LA 71103
SHREVEPORT, LA 71103
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Philip Isherwood's NPI number?
The NPI number for Philip Isherwood is 1497781611. It was assigned to this individual provider in the NPPES registry on June 23, 2006.
Where is Philip Isherwood located?
Philip Isherwood practices at 1501 Kings Hwy, Shreveport, LA 71103. The listed phone number is (318) 675-5185.
What is Philip Isherwood's specialty?
The primary specialty registered for this NPI is Family Medicine, specializing in Addiction Medicine, with taxonomy code 207QA0401X.
Is Philip Isherwood enrolled in Medicare?
Yes. Philip Isherwood is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Philip Isherwood's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Philip Isherwood reassigns Medicare benefits to Applegate Health Services, Inc. (Bossier City, LA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Philip Isherwood's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Philip Isherwood accept?
Health plans from AmeriHealth Caritas Next, Blue Cross and Blue Shield of Louisiana, HMO Louisiana, Molina Healthcare and Oscar Health Insurance and 1 other insurer list Philip Isherwood as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Philip Isherwood was last updated on April 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Philip Donald Isherwood, M.D. · NPI 1497781611
Addiction Medicine physician in Shreveport, Louisiana. Individual provider, active in the CMS NPPES registry since June 23, 2006.
## Identity
- **NPI:** 1497781611 (Entity type: Individual)
- **Enumerated:** June 23, 2006
- **Primary specialty:** Family Medicine - Addiction Medicine · taxonomy 207QA0401X
- **State license:** 13714R (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1501 KINGS HWY, Shreveport, LA 71103-4228
- **Phone:** (318) 675-5185 · **Fax:** (318) 675-7950
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Applegate Health Services, Inc. (NPI 1710412960, Bossier City, LA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Illinois College Of Med, class of 1992
## Record status
- **NPPES last updated:** April 24, 2025
- **Other identifiers:** Medicaid 1423131 (LA)
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Source: [NPI Profile](https://npiprofile.com/npi/1497781611) · Data from the CMS NPPES public registry.