Joanne C. Gronquist, OD
- Medicare patients, 2024
- 261
- Part D claims, 2024
- 199
- Industry payments
- $276
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 515 E Micheltorena St, Santa Barbara, CA 93103
- Practice phone
- Call (805) 563-3234
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Trautwein Medical Corporation A
Santa Barbara, California
Find Joanne Gronquist'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.
Joanne C. Gronquist is an optometrist in Santa Barbara, California
Joanne Gronquist practices at Trautwein Medical Corporation A in Santa Barbara, California.
Joanne Gronquist's NPI, 1518938117, was assigned on January 31, 2006. Joanne Gronquist graduated from Southern California College of Optometry in 1997. Joanne Gronquist holds California license 10965T.
- NPI
- 1518938117NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789638131
- NPI enumeration date
- January 31, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 563-3234
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Joanne C. Gronquist practices at Trautwein Medical Corporation A in Santa Barbara, California
Joanne Gronquist's primary practice is Trautwein Medical Corporation A, at 515 E Micheltorena St, Santa Barbara, CA 93103 in Santa Barbara County. The practice phone is (805) 563-3234.
- Trautwein Medical Corporation A515 E Micheltorena St, Santa Barbara, CA 93103 · Santa Barbara CountyPhone(805) 563-3234
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Joanne C. Gronquist is affiliated with 2 sites of care and 1 medical group
Joanne Gronquist's primary practice is Trautwein Medical Corporation A in Santa Barbara, California. Dmand AI also links Joanne Gronquist to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Joanne C. Gronquist's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joanne Gronquist practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Trautwein Medical Corporation A | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Joanne C. Gronquist is one of 7,206 optometrists in California
Optometrist is Joanne Gronquist's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Joanne Gronquist is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Joanne Gronquist
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
Joanne C. Gronquist treated 261 Medicare patients in 2024, average age 77
CMS counts 261 Medicare patients who saw Joanne Gronquist in 2024. The largest group is 65 to 74, with 109 patients. 71% of them have high cholesterol, and 51% have high blood pressure. Their average risk score is 0.89, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Joanne Gronquist's median patient age at 77, with 73% women.
Joanne Gronquist's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Joanne Gronquist's Medicare patients by sex, 2024
- Women16563%
- Men9637%
Chronic conditions among Joanne Gronquist's Medicare patients, 2024
- High cholesterol71%
- High blood pressure51%
- Arthritis47%
- Osteoporosis22%
- Atrial fibrillation19%
- Mood disorders18%
- Cancer16%
- Chronic kidney disease16%
Share of Medicare patients with each condition. A patient can have several.
Joanne Gronquist's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women73%
- Men27%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Joanne C. Gronquist wrote 199 Medicare Part D claims in 2024
In 2024, Joanne Gronquist wrote 199 Medicare Part D claims for 51 patients. 34% of them were for generic drugs.
Joanne Gronquist's Part D claims by kind of drug, 2024
- Generic68 claims34%
- Brand-name131 claims66%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Joanne C. Gronquist ranks in the 47th percentile for cataract surgery in Medicare
Joanne Gronquist accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 23 procedures of cataract surgery by Joanne Gronquist, more than 47% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Joanne Gronquist ranks in Medicare procedure volume
- Cataract surgery
- 47th percentile23 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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Joanne C. Gronquist received $276 in industry payments in 2025
CMS Open Payments shows 3 general payments to Joanne Gronquist from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Nova Eye, Inc. paid the most, $230.
Companies that paid Joanne Gronquist the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Joanne C. Gronquist graduated from Southern California College of Optometry
Joanne Gronquist graduated from Southern California College of Optometry in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Joanne C. Gronquist'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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 Joanne C. Gronquist
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joanne C. Gronquist's NPI number?
Joanne C. Gronquist's NPI number is 1518938117. It was assigned on January 31, 2006, and it is active in the NPI Registry.
What does Joanne C. Gronquist specialize in?
Joanne C. Gronquist is an optometrist in Santa Barbara, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Joanne C. Gronquist practice?
Joanne Gronquist practices at 515 E Micheltorena St, Santa Barbara, CA 93103. Joanne Gronquist's primary practice is Trautwein Medical Corporation A in Santa Barbara, California. Dmand AI also links Joanne Gronquist to 1 group practice or clinic and 1 medical group.
What is Joanne C. Gronquist's office phone number?
The practice phone on file for Joanne Gronquist is (805) 563-3234.
What is Joanne C. Gronquist's medical license number?
Joanne Gronquist holds California license 10965T.
Does Joanne C. Gronquist accept Medicare?
Yes. CMS lists Joanne Gronquist as accepting Medicare assignment.
How many Medicare patients does Joanne C. Gronquist see?
CMS counts 261 Medicare patients who saw Joanne Gronquist in 2024, with an average age of 77.
Where did Joanne C. Gronquist go to medical school?
Joanne Gronquist graduated from Southern California College of Optometry in 1997.
Has Joanne C. Gronquist received payments from drug or device companies?
CMS Open Payments shows $276 in general payments to Joanne Gronquist from 3 companies from 2025 to 2025. The largest total came from Nova Eye, Inc.
How long has Joanne C. Gronquist been practicing?
Joanne Gronquist graduated from medical school in 1997, 29 years ago.
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