Dr. John Thomas Grissom II, MD
- Medicare services, 2024
- 404
- Medicare patients, 2024
- 105
- Part D claims, 2024
- 167
- Industry payments
- $4,887
- Affiliated sites
- 3
- Practice address
- 3190 E Meridian Park Loop, Suite 111, Wasilla, AK 99654
- Practice phone
- Call (907) 631-3578
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center of Wasilla
Surgery Center - Medicare-Certified · Wasilla, Alaska
Find Dr. Grissom's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John Thomas Grissom II is an interventional pain medicine physician in Wasilla, Alaska
Dr. Grissom practices at Surgery Center of Wasilla in Wasilla, Alaska.
Dr. Grissom's NPI, 1598789513, was assigned on July 26, 2006. Dr. Grissom graduated from University of Washington School of Medicine in 1990. Dr. Grissom holds Alaska license 6558.
- NPI
- 1598789513NPI Registry (opens in a new tab)
- NPI enumeration date
- July 26, 2006
- NPI status
- Active
- Practice phone
- (907) 631-3578
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 62
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John Thomas Grissom II practices at Surgery Center of Wasilla in Wasilla, Alaska
Dr. Grissom's primary practice is Surgery Center of Wasilla, at 3190 E Meridian Park Loop, Suite 111, Wasilla, AK 99654. The practice phone is (907) 631-3578.
- Surgery Center of Wasilla3190 E Meridian Park Loop, Suite 111, Wasilla, AK 99654Phone(907) 631-3578
Source: Dmand AI Affiliation Data
Dr. John Thomas Grissom II is affiliated with 3 sites of care and 2 medical groups
Dr. Grissom's primary practice is Surgery Center of Wasilla in Wasilla, Alaska. The medical group on file is Algone Premier. Dmand AI also links Dr. Grissom to 1 more physician office, 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John Thomas Grissom II's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grissom practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center of Wasilla | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Thomas Grissom II is one of 6 interventional pain medicine physicians in Alaska
Interventional pain medicine is Dr. Grissom's primary specialty in the NPI Registry, under taxonomy code 208VP0014X. Dmand AI has Dr. Grissom's licenses on file in 2 states: Alaska and Idaho.
Specialties and state licenses
- Interventional pain medicine, AlaskaPrimary
- Idaho license
Interventional pain medicine physicians near Dr. Grissom
Counts of interventional pain medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John Thomas Grissom II billed Medicare for 404 services in 2024
CMS data shows 404 Medicare services from Dr. Grissom across 7 procedure codes in 2024, for 105 Medicare patients. Medicare paid $22,421 for them. Every service was in an office.
Dr. Grissom's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5762024: 15773%
- Drugs given in the office
- 2023: 2052024: 12539%
- Other services
- 2023: 1252024: 6350%
- Lab and pathology
- 2023: 1372024: 4666%
- Surgery
- 2023: 482024: 1373%
Dr. Grissom's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. John Thomas Grissom II treated 105 Medicare patients in 2024, average age 66
CMS counts 105 Medicare patients who saw Dr. Grissom in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have arthritis, and 70% have high blood pressure. 40% are also on Medicaid. Their average risk score is 1.54, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Grissom's median patient age at 64, with 55% women.
Dr. Grissom's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Grissom's Medicare patients by sex, 2024
- Women5250%
- Men5350%
Chronic conditions among Dr. Grissom's Medicare patients, 2024
- Arthritis75%
- High blood pressure70%
- High cholesterol52%
- Alcohol and drug use disorders43%
- Anxiety39%
- Tobacco use36%
- COPD35%
- Mood disorders30%
Share of Medicare patients with each condition. A patient can have several.
Dr. Grissom's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Thomas Grissom II wrote 167 Medicare Part D claims in 2024
In 2024, Dr. Grissom wrote 167 Medicare Part D claims for 69 patients. 97% of them were for generic drugs. CMS names the drug for 98 of them, across 5 drugs with 11 or more claims each, at $3,481 in total drug cost. In 2023, CMS named 223 claims across 12 drugs.
Dr. Grissom's Part D claims by kind of drug, 2024
- Generic162 claims97%
- Brand-name and other5 claims3%
Dr. Grissom's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Grissom's Part D claims, 2024
- Opioids66%110 of 167 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2232024: 9856%
Drugs named by CMS: 5 in 2024, 12 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. John Thomas Grissom II received $4,887 in industry payments from 2016 to 2025
CMS Open Payments shows 244 general payments to Dr. Grissom from 27 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $2,215.
General payments to Dr. Grissom by program year, 2016 to 2025
Companies that paid Dr. Grissom the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Thomas Grissom II graduated from University of Washington School of Medicine
Dr. Grissom graduated from University of Washington School of Medicine in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John Thomas Grissom II's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John Thomas Grissom II
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John Thomas Grissom II's NPI number?
Dr. John Thomas Grissom II's NPI number is 1598789513. It was assigned on July 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Thomas Grissom II?
Dr. John Thomas Grissom II is an interventional pain medicine physician in Wasilla, Alaska. The primary specialty in the NPI Registry is Interventional Pain Medicine Physician (taxonomy code 208VP0014X).
Where does Dr. John Thomas Grissom II practice?
Dr. Grissom practices at 3190 E Meridian Park Loop, Suite 111, Wasilla, AK 99654. Dr. Grissom's primary practice is Surgery Center of Wasilla in Wasilla, Alaska. Dmand AI also links Dr. Grissom to 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. John Thomas Grissom II's office phone number?
The practice phone on file for Dr. Grissom is (907) 631-3578.
What is Dr. John Thomas Grissom II's medical license number?
Dr. Grissom holds Alaska license 6558, one of the licenses on file in 2 states.
Which states has Dr. John Thomas Grissom II been licensed in?
Dmand AI has state licenses on file for Dr. Grissom in Alaska and Idaho.
What medical group is Dr. John Thomas Grissom II part of?
Dr. Grissom is linked to Algone Premier. Dmand AI links Dr. Grissom to 1 more medical group.
Does Dr. John Thomas Grissom II accept Medicare?
Yes. CMS data shows Dr. Grissom billed Medicare for 404 services in 2024.
How many Medicare patients does Dr. John Thomas Grissom II see?
CMS counts 105 Medicare patients who saw Dr. Grissom in 2024, with an average age of 66.
What services does Dr. John Thomas Grissom II bill to Medicare?
In 2024, Dr. Grissom's most billed Medicare services were injected or infused drug (J3301), office visit, established patient (99214) and medicare temporary code (Q9966).
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Where did Dr. John Thomas Grissom II go to medical school?
Dr. Grissom graduated from University of Washington School of Medicine in 1990.
What drugs does Dr. John Thomas Grissom II prescribe most?
In 2024 Medicare Part D data, Dr. Grissom's most prescribed drugs by claims were Oxycodone HCl, Morphine Sulfate ER and Hydrocodone-Acetaminophen.
Has Dr. John Thomas Grissom II received payments from drug or device companies?
CMS Open Payments shows $4,887 in general payments to Dr. Grissom from 27 companies from 2016 to 2025. The largest total came from Boston Scientific Corporation.
How long has Dr. John Thomas Grissom II been practicing?
Dr. Grissom graduated from medical school in 1990, 36 years ago.
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