Colin T. Iosso, MD
Neurology Physician · Tacoma, WA
Colin T. Iosso, MD is a neurology physician with a practice address in Tacoma, Washington, and NPI 1538137484, issued on Mar 8, 2006. Check the license (Washington MD60201685, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Colin T. Iosso
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- MD60201685 WA
39851 TN
M7291 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1608 S J St FL 5, Tacoma, WA 98405
- Phone
- (253) 274-7505
- Enumerated
- Mar 8, 2006
- Record last updated
- Feb 28, 2025
- Medicaid ID
- 2011519 WA
- Medicare enrollment
- Enrolled (PECOS I20110307000674); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 489 in Washington → Look up another NPI →
Also registered at 1608 S J St FL 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bernard Baduria, MA, CCC-AAudiologist1033167523
- Joseph Duong, MDNeurology Physician1942681838
- Kara Ellingson, MDNeurology Physician1659809622
- Jay Erickson, M.D.Neurology Physician1114990587
- Lorin Freedman, MDNeurology Physician1467409920
- Yelena Golub, PA-CMedical Physician Assistant1316330756
Verify Colin T. Iosso in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD60201685Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average neurology physician in 2024
1,097 Medicare Part D claims for 240 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims.
Most prescribed
- Gabapentin94 claims
- Donepezil Hcl85 claims
- Levetiracetam84 claims
- Zonisamide46 claims
- Topiramate45 claims
- Carbidopa-Levodopa35 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: $133.96
2 payments; by number, the most common kind was education; the largest payer was Eisai Inc. The 10,858 providers of this specialty with any payment received $8,318.07 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 2 group practices
- Franciscan Medical GroupTacoma, WA
- Public Hospital Dist NO 1 SkagitMount Vernon, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Colin T. Iosso among 489 neurology physician records in Washington
Colin T. Iosso, MD is one of 489 neurology physician records with a practice address in Washington. 82% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1988 · median 2007 among the 351 with a school on file
- Record last updated2025 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Washington
There are 489 neurology physician records in Washington.
All 489 in Washington → Every provider in Tacoma → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Jay Erickson, M.D.Tacoma, WA 984051114990587
- Lorin Freedman, MDTacoma, WA 984051467409920
- James Griffith, MDTacoma, WA 984051073518239
- Sarah Kranick, MDTacoma, WA 984051447315601
- W. Kushner, D.O.Tacoma, WA 984051811049133
- Peter Kwon, MDTacoma, WA 984051043217920
- William Overfield, MDTacoma, WA 984051952308074
- Lyudmila Petruk, MDTacoma, WA 984051528154770
Common questions
What is Colin T. Iosso, MD's NPI number?
Colin T. Iosso, MD's National Provider Identifier (NPI) is 1538137484, issued on Mar 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Colin T. Iosso, MD located?
The NPPES record lists a practice address at 1608 S J St FL 5, Tacoma, WA, 98405. Phone: (253) 274-7505. Providers update this record themselves, so call before visiting.
How can I verify Colin T. Iosso, MD's license?
NPPES lists Washington license number MD60201685, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Colin T. Iosso, MD prescribe under Medicare Part D?
In 2024, Colin T. Iosso, MD had 1,097 Medicare Part D claims for 240 beneficiaries; the average among neurology physician prescribers was 1,370. 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.