Michael L. Chaffin, NP
- Medicare patients, 2024
- 139
- Part D claims, 2024
- 107
- Industry payments
- $87
- Affiliated sites
- 4
- Medical groups
- 4
- Practice address
- 795 El Camino Real, Palo Alto, CA 94301
- Practice phone
- Call (650) 324-1832
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Surgery Center Palo Alto
Surgery Center - Medicare-Certified · Palo Alto, California
Find Michael Chaffin'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 L. Chaffin is a nurse practitioner in Palo Alto, California
Michael Chaffin practices at Surgery Center Palo Alto in Palo Alto, California.
Michael Chaffin's NPI, 1558640235, was assigned on August 11, 2011. Michael Chaffin holds California license 20962.
- NPI
- 1558640235NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466624218
- NPI enumeration date
- August 11, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (650) 324-1832
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 41
- Medical school graduation
- 2011
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael L. Chaffin practices at Surgery Center Palo Alto in Palo Alto, California
Michael Chaffin's primary practice is Surgery Center Palo Alto, at 795 El Camino Real, Palo Alto, CA 94301. The practice phone is (650) 324-1832.
- Surgery Center Palo Alto795 El Camino Real, Palo Alto, CA 94301Phone(650) 324-1832
Source: Dmand AI Affiliation Data
Michael L. Chaffin is affiliated with 4 sites of care and 4 medical groups
Michael Chaffin's primary practice is Surgery Center Palo Alto in Palo Alto, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Michael Chaffin to 3 more group practices and clinics and 3 medical groups, 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 L. Chaffin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Chaffin practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Surgery Center Palo Alto | Available with a free account |
| +3 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael L. Chaffin is one of 5,983 nurse practitioners in California
Nurse practitioner is Michael Chaffin's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Michael Chaffin is licensed in California.
Specialties and state licenses
- Nurse practitioner, CaliforniaPrimary
Nurse practitioners near Michael Chaffin
Counts of nurse practitioners 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 L. Chaffin treated 139 Medicare patients in 2024, average age 77
CMS counts 139 Medicare patients who saw Michael Chaffin in 2024. The largest group is 65 to 74, with 51 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 1.74, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Michael Chaffin's median patient age at 71, with 42% women.
Michael Chaffin's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Michael Chaffin's Medicare patients by sex, 2024
- Women6245%
- Men7755%
Chronic conditions among Michael Chaffin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Atrial fibrillation69%
- Chronic kidney disease45%
- Heart failure45%
- Diabetes40%
- Ischemic heart disease36%
- Arthritis28%
Share of Medicare patients with each condition. A patient can have several.
Michael Chaffin'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
- Women42%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Michael L. Chaffin wrote 107 Medicare Part D claims in 2024
In 2024, Michael Chaffin wrote 107 Medicare Part D claims for 64 patients. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Michael L. Chaffin offers telehealth to Medicare patients
Michael Chaffin accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Michael Chaffin as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Michael L. Chaffin received $87 in industry payments in 2025
CMS Open Payments shows 2 general payments to Michael Chaffin from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Boston Scientific Corporation paid the most, $87.
Companies that paid Michael Chaffin 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 Michael L. Chaffin'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) |
| 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 L. Chaffin
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 L. Chaffin's NPI number?
Michael L. Chaffin's NPI number is 1558640235. It was assigned on August 11, 2011, and it is active in the NPI Registry.
What does Michael L. Chaffin specialize in?
Michael L. Chaffin is a nurse practitioner in Palo Alto, California. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Michael L. Chaffin practice?
Michael Chaffin practices at 795 El Camino Real, Palo Alto, CA 94301. Michael Chaffin's primary practice is Surgery Center Palo Alto in Palo Alto, California. Dmand AI also links Michael Chaffin to 3 group practices and clinics and 3 medical groups.
What is Michael L. Chaffin's office phone number?
The practice phone on file for Michael Chaffin is (650) 324-1832.
What is Michael L. Chaffin's medical license number?
Michael Chaffin holds California license 20962.
What medical group is Michael L. Chaffin part of?
Michael Chaffin is linked to The Permanente Medical Group, Inc. Dmand AI links Michael Chaffin to 3 more medical groups.
Does Michael L. Chaffin accept Medicare?
Yes. CMS lists Michael Chaffin as accepting Medicare assignment.
Does Michael L. Chaffin offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Michael Chaffin as offering telehealth services.
How many Medicare patients does Michael L. Chaffin see?
CMS counts 139 Medicare patients who saw Michael Chaffin in 2024, with an average age of 77.
Has Michael L. Chaffin received payments from drug or device companies?
CMS Open Payments shows $87 in general payments to Michael Chaffin from 1 company from 2025 to 2025. The largest total came from Boston Scientific Corporation.
How long has Michael L. Chaffin been practicing?
Michael Chaffin graduated from medical school in 2011, 15 years ago.
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