Michael David Spanfelner, OD
- Medicare patients, 2024
- 414
- Part D claims, 2024
- 348
- Industry payments
- $111
- Affiliated sites
- 2
- Medical group
- 1
- Practice address
- 150 Muir Rd, Martinez, CA 94553
- Practice phone
- Call (702) 341-3020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Martinez VA Medical Center
VA Clinic / Health Facility · Martinez, California
Find Michael Spanfelner'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.
Michael David Spanfelner is an optometrist in Martinez, California
Michael Spanfelner practices at Martinez VA Medical Center in Martinez, California.
Michael Spanfelner's NPI, 1669586541, was assigned on August 18, 2006. Michael Spanfelner graduated from University of California - School of Optometry in 1993. Michael Spanfelner holds California license 10240T.
- NPI
- 1669586541NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385722743
- NPI enumeration date
- August 18, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 341-3020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael David Spanfelner practices at Martinez VA Medical Center in Martinez, California
Michael Spanfelner's primary practice is Martinez VA Medical Center, at 150 Muir Rd, Martinez, CA 94553. The practice phone is (702) 341-3020.
- Martinez VA Medical Center150 Muir Rd, Martinez, CA 94553Phone(702) 341-3020
Source: Dmand AI Affiliation Data
Michael David Spanfelner is affiliated with 2 sites of care and 1 medical group
Michael Spanfelner's primary practice is Martinez VA Medical Center in Martinez, California. Dmand AI also links Michael Spanfelner to 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 Michael David Spanfelner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Spanfelner practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Martinez VA Medical Center | Available with a free account |
| +1 more site 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Michael David Spanfelner is one of 7,206 optometrists in California
Optometrist is Michael Spanfelner's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Michael Spanfelner is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Michael Spanfelner
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
Michael David Spanfelner treated 414 Medicare patients in 2024, average age 72
CMS counts 414 Medicare patients who saw Michael Spanfelner in 2024. The largest group is 65 to 74, with 204 patients. 70% of them have high blood pressure, and 69% have high cholesterol. 30% are also on Medicaid. Their average risk score is 0.95, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Michael Spanfelner's median patient age at 71, with 64% women.
Michael Spanfelner's Medicare patients by age, 2024
Michael Spanfelner's Medicare patients by sex, 2024
- Women25862%
- Men15638%
Chronic conditions among Michael Spanfelner's Medicare patients, 2024
- High blood pressure70%
- High cholesterol69%
- Arthritis31%
- Diabetes29%
- Anxiety19%
- Mood disorders19%
- Depression17%
- COPD16%
Share of Medicare patients with each condition. A patient can have several.
Michael Spanfelner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women64%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Michael David Spanfelner wrote 348 Medicare Part D claims in 2024
In 2024, Michael Spanfelner wrote 348 Medicare Part D claims for 77 patients. 59% of them were for generic drugs.
Michael Spanfelner's Part D claims by kind of drug, 2024
- Generic205 claims59%
- Brand-name143 claims41%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Michael David Spanfelner takes part in Medicare
Michael Spanfelner accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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.
Michael David Spanfelner received $111 in industry payments in 2025
CMS Open Payments shows 1 general payment to Michael Spanfelner from 1 drug or device company in 2025. Entertainment make up the largest share, 100% of the total. Optos, Inc. paid the most, $111.
Companies that paid Michael Spanfelner the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Michael David Spanfelner graduated from University of California - School of Optometry
Michael Spanfelner graduated from University of California - School of Optometry in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Michael David Spanfelner'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) |
| 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 Michael David Spanfelner
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael David Spanfelner's NPI number?
Michael David Spanfelner's NPI number is 1669586541. It was assigned on August 18, 2006, and it is active in the NPI Registry.
What does Michael David Spanfelner specialize in?
Michael David Spanfelner is an optometrist in Martinez, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Michael David Spanfelner practice?
Michael Spanfelner practices at 150 Muir Rd, Martinez, CA 94553. Michael Spanfelner's primary practice is Martinez VA Medical Center in Martinez, California. Dmand AI also links Michael Spanfelner to 1 group practice or clinic and 1 medical group.
What is Michael David Spanfelner's office phone number?
The practice phone on file for Michael Spanfelner is (702) 341-3020.
What is Michael David Spanfelner's medical license number?
Michael Spanfelner holds California license 10240T.
Does Michael David Spanfelner accept Medicare?
Yes. CMS lists Michael Spanfelner as accepting Medicare assignment.
How many Medicare patients does Michael David Spanfelner see?
CMS counts 414 Medicare patients who saw Michael Spanfelner in 2024, with an average age of 72.
Where did Michael David Spanfelner go to medical school?
Michael Spanfelner graduated from University of California - School of Optometry in 1993.
Has Michael David Spanfelner received payments from drug or device companies?
CMS Open Payments shows $111 in general payments to Michael Spanfelner from 1 company from 2025 to 2025. The largest total came from Optos, Inc.
How long has Michael David Spanfelner been practicing?
Michael Spanfelner graduated from medical school in 1993, 33 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