Philip Donald Isherwood, M.D.
Addiction Medicine (Family Medicine) Physician · Shreveport, LA
Philip Donald Isherwood, M.D. is an addiction medicine (family medicine) physician with a practice address in Shreveport, Louisiana, and NPI 1497781611, issued on Jun 23, 2006. Check the license (Louisiana 13714R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Philip Donald Isherwood
- Credential
- M.D.
- Primary taxonomy
- Addiction Medicine (Family Medicine) Physician 207QA0401X
- License number
- 13714R LA
Self-reported in NPPES; status is on the state search - Practice location
- 1501 Kings Hwy, Shreveport, LA 71103
- Phone
- (318) 675-5185
- Enumerated
- Jun 23, 2006
- Record last updated
- Apr 24, 2025
- Fax
- (318) 675-7950
- Medicaid ID
- 1423131 LA
- Entity
- Type 1 · individual
8 nearest addiction medicine (family medicine) physician records → All 11 in Louisiana → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Philip Donald Isherwood in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 13714RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average addiction medicine (family medicine) physician in 2024
293 Medicare Part D claims for 27 beneficiaries, against an average of 664 among the 581 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Buprenorphine-Naloxone77 claims
- Buprenorphine Hcl65 claims
- Clonazepam37 claims
- Gabapentin19 claims
- Pregabalin12 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: $435.66
18 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 305 providers of this specialty with any payment received $1,151.00 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.
Philip Donald Isherwood among 11 addiction medicine (family medicine) physician records in Louisiana
Philip Donald Isherwood, M.D. is one of 11 addiction medicine (family medicine) physician records with a practice address in Louisiana. 91% 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, 55% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% of these records are
- Record last updated2025 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QA0401X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Addiction Medicine (Family Medicine) Physician providers in Louisiana
There are 11 addiction medicine (family medicine) physician records in Louisiana.
All 11 in Louisiana → Every provider in Shreveport → Addiction Medicine (Family Medicine) Physician nationwide →
The 8 addiction medicine (family medicine) physician records with the nearest ZIP codes
- Michael Melcher, MDAlexandria, LA 713031609002799
- Brian Benson, M.D. PH.D.Baton Rouge, LA 708161558621821
- Louis Cataldie, M.D.Baton Rouge, LA 708091750573747
- Susan Julius, MDBaton Rouge, LA 708081407921935
- John Dauphin, M.D.Lafayette, LA 705011356363428
- Brandie Smith, FNPCovington, LA 704331568976413
- Chad Trosclair, MDCovington, LA 704331952556094
- Renee Kilmer, D.O.Metairie, LA 700061356346225
Common questions
What is Philip Donald Isherwood, M.D.'s NPI number?
Philip Donald Isherwood, M.D.'s National Provider Identifier (NPI) is 1497781611, issued on Jun 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Philip Donald Isherwood, M.D. located?
The NPPES record lists a practice address at 1501 Kings Hwy, Shreveport, LA, 71103. Phone: (318) 675-5185. Providers update this record themselves, so call before visiting.
How can I verify Philip Donald Isherwood, M.D.'s license?
NPPES lists Louisiana license number 13714R, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Philip Donald Isherwood, M.D. prescribe under Medicare Part D?
In 2024, Philip Donald Isherwood, M.D. had 293 Medicare Part D claims for 27 beneficiaries; the average among addiction medicine (family medicine) physician prescribers was 664. 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.