John Rader Prewett, OD
- Medicare patients, 2024
- 426
- Part D claims, 2024
- 129
- MIPS score, 2024
- 63
- Industry payments
- $20
- Affiliated sites
- 1
- Practice address
- 1429 S Broadway, Santa Maria, CA 93454
- Practice phone
- Call (805) 925-9575
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
John R Prewett O D INC
Eye care practice · Santa Maria, California
Find John Prewett'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.
John Rader Prewett is an optometrist in Santa Maria, California
John Prewett practices at John R Prewett O D INC in Santa Maria, California.
John Prewett's NPI, 1902987001, was assigned on October 17, 2006. John Prewett holds California license CA7312.
- NPI
- 1902987001NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5193617496
- NPI enumeration date
- October 17, 2006
- NPI status
- Active
- Practice phone
- (805) 925-9575
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
John Rader Prewett practices at John R Prewett O D INC in Santa Maria, California
John Prewett's primary practice is John R Prewett O D INC, at 1429 S Broadway, Santa Maria, CA 93454. The practice phone is (805) 925-9575.
- John R Prewett O D INC1429 S Broadway, Santa Maria, CA 93454Phone(805) 925-9575
Source: Dmand AI Affiliation Data
John Rader Prewett is affiliated with 1 site of care and 1 medical group
John Prewett's primary practice is John R Prewett O D INC in Santa Maria, California. Dmand AI also links John Prewett to 1 medical group, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at John Rader Prewett's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Prewett practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| John R Prewett O D INC | Available with a free account |
| +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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
John Rader Prewett is one of 7,206 optometrists in California
Optometrist is John Prewett's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John Prewett is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near John Prewett
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
John Rader Prewett treated 426 Medicare patients in 2024, average age 69
CMS counts 426 Medicare patients who saw John Prewett in 2024. The largest group is 65 to 74, with 205 patients. 75% of them have high blood pressure, and 72% have high cholesterol. 90% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John Prewett's median patient age at 66, with 53% women.
John Prewett's Medicare patients by age, 2024
John Prewett's Medicare patients by sex, 2024
- Women26462%
- Men16238%
Chronic conditions among John Prewett's Medicare patients, 2024
- High blood pressure75%
- High cholesterol72%
- Diabetes46%
- Arthritis38%
- Anxiety27%
- Mood disorders27%
- Depression23%
- Chronic kidney disease17%
Share of Medicare patients with each condition. A patient can have several.
John Prewett's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John Rader Prewett wrote 129 Medicare Part D claims in 2024
In 2024, John Prewett wrote 129 Medicare Part D claims for 57 patients. 44% of them were for generic drugs.
John Prewett's Part D claims by kind of drug, 2024
- Generic57 claims44%
- Brand-name72 claims56%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John Rader Prewett scored 63 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 63 out of 100 for John Prewett for performance year 2024, reported individually.
John Prewett's MIPS scores, performance year 2024
- 63of 100Final score
- 16.7of 100Quality
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
John Rader Prewett received $20 in industry payments in 2025
CMS Open Payments shows 1 general payment to John Prewett from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Tarsus Pharmaceuticals, Inc. paid the most, $20.
Companies that paid John Prewett the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John Rader Prewett'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 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 | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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 John Rader Prewett
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Rader Prewett's NPI number?
John Rader Prewett's NPI number is 1902987001. It was assigned on October 17, 2006, and it is active in the NPI Registry.
What does John Rader Prewett specialize in?
John Rader Prewett is an optometrist in Santa Maria, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John Rader Prewett practice?
John Prewett practices at 1429 S Broadway, Santa Maria, CA 93454. John Prewett's primary practice is John R Prewett O D INC in Santa Maria, California. Dmand AI also links John Prewett to 1 medical group.
What is John Rader Prewett's office phone number?
The practice phone on file for John Prewett is (805) 925-9575.
What is John Rader Prewett's medical license number?
John Prewett holds California license CA7312.
What is John Rader Prewett's MIPS score?
John Prewett's MIPS final score for performance year 2024 is 63 out of 100, reported individually.
How many Medicare patients does John Rader Prewett see?
CMS counts 426 Medicare patients who saw John Prewett in 2024, with an average age of 69.
Has John Rader Prewett received payments from drug or device companies?
CMS Open Payments shows $20 in general payments to John Prewett from 1 company from 2025 to 2025. The largest total came from Tarsus Pharmaceuticals, Inc.
How long has John Rader Prewett been practicing?
John Prewett graduated from medical school in 1981, 45 years ago.
Selling to optometrist practices?
See optometrists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card