Gregory Charles Johnson, OD
- Medicare patients, 2024
- 146
- Part D claims, 2024
- 80
- Hospital affiliations
- 1
- Industry payments
- $16
- Medical group
- 1
- Practice address
- 315 S Mlk Jr Way, Tacoma, WA 98405
- Practice phone
- Call (253) 403-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Gregory Charles Johnson is an optometrist in Tacoma, Washington
Gregory Johnson practices at MultiCare Tacoma General Hospital in Tacoma, Washington, part of MultiCare Health System.
Gregory Johnson's NPI, 1447396460, was assigned on January 29, 2007. Gregory Johnson graduated from Pacific University - College of Optometry in 1994. Gregory Johnson holds Washington license 3116TX.
- NPI
- 1447396460NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4082766985
- NPI enumeration date
- January 29, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (253) 403-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Gregory Charles Johnson practices at MultiCare Tacoma General Hospital in Tacoma, Washington
Gregory Johnson's primary practice is MultiCare Tacoma General Hospital, at 315 S Mlk Jr Way, Tacoma, WA 98405 in Pierce County. The practice phone is (253) 403-1000.
- MultiCare Tacoma General Hospital315 S Mlk Jr Way, Tacoma, WA 98405 · Pierce CountyPhone(253) 403-1000
Source: Dmand AI Affiliation Data
Gregory Charles Johnson is affiliated with 3 sites of care and 1 medical group
Gregory Johnson's primary practice is MultiCare Tacoma General Hospital in Tacoma, Washington, part of MultiCare Health System. Dmand AI also links Gregory Johnson to 1 behavioral health center, 1 urgent care center 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 Gregory Charles Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Johnson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MultiCare Tacoma General Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across MultiCare Health System and 6.2K+ hospitals, with verified contacts in the same login.
Gregory Charles Johnson is one of 1,258 optometrists in Washington
Optometrist is Gregory Johnson's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Gregory Johnson is licensed in Washington.
Specialties and state licenses
- Optometrist, WashingtonPrimary
Optometrists near Gregory Johnson
Counts of optometrists 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
Gregory Charles Johnson treated 146 Medicare patients in 2024, average age 74
CMS counts 146 Medicare patients who saw Gregory Johnson in 2024. The largest group is 65 to 74, with 72 patients. 71% of them have high cholesterol, and 67% have high blood pressure. 19% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Gregory Johnson's median patient age at 67, with 54% women.
Gregory Johnson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Gregory Johnson's Medicare patients by sex, 2024
- Women7753%
- Men6947%
Chronic conditions among Gregory Johnson's Medicare patients, 2024
- High cholesterol71%
- High blood pressure67%
- Arthritis41%
- Diabetes31%
- Anxiety18%
- COPD18%
- Ischemic heart disease18%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
Gregory Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Gregory Charles Johnson wrote 80 Medicare Part D claims in 2024
In 2024, Gregory Johnson wrote 80 Medicare Part D claims for 23 patients. 61% of them were for generic drugs.
Gregory Johnson's Part D claims by kind of drug, 2024
- Generic49 claims61%
- Brand-name31 claims39%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Gregory Charles Johnson ranks in the 52nd percentile for cataract surgery in Medicare
Gregory Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 28 procedures of cataract surgery by Gregory Johnson, more than 52% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Gregory Johnson ranks in Medicare procedure volume
- Cataract surgery
- 52nd percentile28 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Gregory Charles Johnson received $16 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gregory Johnson from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $16.
Companies that paid Gregory Johnson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Gregory Charles Johnson graduated from Pacific University - College of Optometry
Gregory Johnson graduated from Pacific University - College of Optometry in 1994.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Gregory Charles Johnson'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 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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (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 Gregory Charles Johnson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory Charles Johnson's NPI number?
Gregory Charles Johnson's NPI number is 1447396460. It was assigned on January 29, 2007, and it is active in the NPI Registry.
What does Gregory Charles Johnson specialize in?
Gregory Charles Johnson is an optometrist in Tacoma, Washington. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Gregory Charles Johnson practice?
Gregory Johnson practices at 315 S Mlk Jr Way, Tacoma, WA 98405. Gregory Johnson's primary practice is MultiCare Tacoma General Hospital in Tacoma, Washington, part of MultiCare Health System. Dmand AI also links Gregory Johnson to 1 behavioral health center, 1 urgent care center and 1 medical group.
What is Gregory Charles Johnson's office phone number?
The practice phone on file for Gregory Johnson is (253) 403-1000.
What is Gregory Charles Johnson's medical license number?
Gregory Johnson holds Washington license 3116TX.
Which hospitals is Gregory Charles Johnson affiliated with?
Gregory Johnson practices at MultiCare Tacoma General Hospital in Tacoma, Washington.
Does Gregory Charles Johnson accept Medicare?
Yes. CMS lists Gregory Johnson as accepting Medicare assignment.
How many Medicare patients does Gregory Charles Johnson see?
CMS counts 146 Medicare patients who saw Gregory Johnson in 2024, with an average age of 74.
Where did Gregory Charles Johnson go to medical school?
Gregory Johnson graduated from Pacific University - College of Optometry in 1994.
Has Gregory Charles Johnson received payments from drug or device companies?
CMS Open Payments shows $16 in general payments to Gregory Johnson from 1 company from 2025 to 2025. The largest total came from Eli Lilly and Company.
How long has Gregory Charles Johnson been practicing?
Gregory Johnson graduated from medical school in 1994, 32 years ago.
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