John J. McDiarmid, OD
- Medicare patients, 2024
- 550
- Part D claims, 2024
- 247
- MIPS score, 2024
- 91
- Industry payments
- $520
- Affiliated sites
- 1
- Practice address
- 25395 Hancock Avenue, Suite 100, Murrieta, CA 92562
- Practice phone
- Call (951) 696-5388
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Inland Eye Specialists Surgery Center - Murrieta
Surgery Center - Medicare-Certified · Murrieta, California
Find John McDiarmid'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 J. McDiarmid is an optometrist in Murrieta, California
John McDiarmid practices at Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California.
John McDiarmid's NPI, 1427038959, was assigned on January 19, 2006. John McDiarmid graduated from Southern College of Optometry in 1990. John McDiarmid holds California license OPT9467T.
- NPI
- 1427038959NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3779656319
- NPI enumeration date
- January 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (951) 696-5388
- 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; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
John J. McDiarmid practices at Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California
John McDiarmid's primary practice is Inland Eye Specialists Surgery Center - Murrieta, at 25395 Hancock Avenue, Suite 100, Murrieta, CA 92562. The practice phone is (951) 696-5388.
- Inland Eye Specialists Surgery Center - Murrieta25395 Hancock Avenue, Suite 100, Murrieta, CA 92562Phone(951) 696-5388
Source: Dmand AI Affiliation Data
John J. McDiarmid is affiliated with 1 site of care and 1 medical group
John McDiarmid's primary practice is Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California. Dmand AI also links John McDiarmid to 1 medical group, named with a free account. John McDiarmid's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John J. McDiarmid's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John McDiarmid practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Inland Eye Specialists Surgery Center - Murrieta | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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John J. McDiarmid is one of 7,206 optometrists in California
Optometrist is John McDiarmid's primary specialty in the NPI Registry, under taxonomy code 152W00000X. John McDiarmid is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near John McDiarmid
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 J. McDiarmid treated 550 Medicare patients in 2024, average age 77
CMS counts 550 Medicare patients who saw John McDiarmid in 2024. The largest group is 75 to 84, with 232 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 5% are also on Medicaid. Their average risk score is 1.18, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts John McDiarmid's median patient age at 67, with 62% women.
John McDiarmid's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
John McDiarmid's Medicare patients by sex, 2024
- Women35665%
- Men19435%
Chronic conditions among John McDiarmid's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis48%
- Diabetes32%
- Ischemic heart disease27%
- Chronic kidney disease22%
- Atrial fibrillation21%
- Anxiety20%
Share of Medicare patients with each condition. A patient can have several.
John McDiarmid'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
- Women62%
- Men37%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
John J. McDiarmid wrote 247 Medicare Part D claims in 2024
In 2024, John McDiarmid wrote 247 Medicare Part D claims for 172 patients. 56% of them were for generic drugs.
John McDiarmid's Part D claims by kind of drug, 2024
- Generic139 claims56%
- Brand-name108 claims44%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
John J. McDiarmid scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for John McDiarmid for performance year 2024, reported as part of a group. John McDiarmid accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
John McDiarmid's MIPS scores, performance year 2024
- 91of 100Final score
- 88.7of 100Quality
- 99of 100Promoting Interoperability
- 40of 100Improvement Activities
- 78of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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John J. McDiarmid received $520 in industry payments in 2025
CMS Open Payments shows 8 general payments to John McDiarmid from 5 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Alcon Laboratories Inc paid the most, $278.
Companies that paid John McDiarmid the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
John J. McDiarmid graduated from Southern College of Optometry
John McDiarmid graduated from Southern College of Optometry in 1990.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for John J. McDiarmid'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)Clinician Public Reporting: Overall MIPS Performance (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 John J. McDiarmid
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 J. McDiarmid's NPI number?
John J. McDiarmid's NPI number is 1427038959. It was assigned on January 19, 2006, and it is active in the NPI Registry.
What does John J. McDiarmid specialize in?
John J. McDiarmid is an optometrist in Murrieta, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does John J. McDiarmid practice?
John McDiarmid practices at 25395 Hancock Avenue, Suite 100, Murrieta, CA 92562. John McDiarmid's primary practice is Inland Eye Specialists Surgery Center - Murrieta in Murrieta, California. Dmand AI also links John McDiarmid to 1 medical group.
What is John J. McDiarmid's office phone number?
The practice phone on file for John McDiarmid is (951) 696-5388.
What is John J. McDiarmid's medical license number?
John McDiarmid holds California license OPT9467T.
Does John J. McDiarmid accept Medicare?
Yes. CMS lists John McDiarmid as accepting Medicare assignment.
What is John J. McDiarmid's MIPS score?
John McDiarmid's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does John J. McDiarmid see?
CMS counts 550 Medicare patients who saw John McDiarmid in 2024, with an average age of 77.
Where did John J. McDiarmid go to medical school?
John McDiarmid graduated from Southern College of Optometry in 1990.
Has John J. McDiarmid received payments from drug or device companies?
CMS Open Payments shows $520 in general payments to John McDiarmid from 5 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has John J. McDiarmid been practicing?
John McDiarmid graduated from medical school in 1990, 36 years ago.
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