Marc T. Sizemore, FNP
- Medicare services, 2024
- 1,668
- Medicare patients, 2024
- 479
- Part D claims, 2024
- 3,515
- MIPS score, 2024
- 24
- Hospital affiliations
- 1
- Practice address
- 231 E Caldwell Ave, Visalia, CA 93277
- Practice phone
- Call (559) 622-9800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Immediate Care Medical Group, Inc.
Visalia, California
Find Marc Sizemore'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.
Marc T. Sizemore is a family nurse practitioner in Visalia, California
Marc Sizemore practices at Immediate Care Medical Group, Inc. in Visalia, California.
Marc Sizemore's NPI, 1043419138, was assigned on July 17, 2007. Marc Sizemore holds California license 17384.
- NPI
- 1043419138NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0446345730
- NPI enumeration date
- July 17, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (559) 622-9800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Marc T. Sizemore practices at Immediate Care Medical Group, Inc. in Visalia, California
Marc Sizemore's primary practice is Immediate Care Medical Group, Inc., at 231 E Caldwell Ave, Visalia, CA 93277 in Tulare County. The practice phone is (559) 622-9800.
- Immediate Care Medical Group, Inc.231 E Caldwell Ave, Visalia, CA 93277 · Tulare CountyPhone(559) 622-9800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Marc T. Sizemore is affiliated with 5 sites of care and 1 medical group
Marc Sizemore's primary practice is Immediate Care Medical Group, Inc. in Visalia, California. Marc Sizemore is also affiliated with Kaweah Health Medical Center. The medical group on file is Immediate Care Center. Dmand AI also links Marc Sizemore to 3 more home health agencies, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Marc T. Sizemore's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Marc Sizemore practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Immediate Care Medical Group, Inc. | Available with a free account |
| +4 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Marc T. Sizemore is one of 13,532 family nurse practitioners in California
Family is Marc Sizemore's primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Marc Sizemore is licensed in California.
Specialties and state licenses
- Family nurse practitioner, CaliforniaPrimary
Clinical focus
Dmand AI lists acne, acute sinusitis, acute skin infection, ankle or foot injury, anxiety, arthritis, asthma and bipolar disorder among the conditions Marc Sizemore treats.
Family nurse practitioners near Marc Sizemore
Counts of family 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
Marc T. Sizemore billed Medicare for 1,668 services in 2024
CMS data shows 1,668 Medicare services from Marc Sizemore across 16 procedure codes in 2024, for 479 Medicare patients. Medicare paid $76,807 for them. Every service was in an office.
Marc Sizemore's Medicare services by type, 2024
- Office and hospital visits1,178
- Drugs given in the office164
- Lab and pathology117
- Tests and treatments97
- Surgery95
- Other services17
Marc Sizemore compared with the California median for family nurse practitioners, 2024
- Marc Sizemore
- California median
- Medicare services
- 1,668vs 2347.1 times
- Medicare patients
- 479vs 905.3 times
- Part D claims
- 2,954vs 3608.2 times
Medians across 6,382 family nurse practitioners in California with Dmand AI profiles that report each measure.
Marc Sizemore's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Marc Sizemore and other family nurse practitioners in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Marc T. Sizemore treated 479 Medicare patients in 2024, average age 74
CMS counts 479 Medicare patients who saw Marc Sizemore in 2024. The largest group is 65 to 74, with 247 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 3% are also on Medicaid. Their average risk score is 0.91, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Marc Sizemore's median patient age at 57, with 49% women.
Marc Sizemore's Medicare patients by age, 2024
Marc Sizemore's Medicare patients by sex, 2024
- Women27357%
- Men20643%
Chronic conditions among Marc Sizemore's Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis43%
- Ischemic heart disease25%
- Anxiety24%
- Diabetes24%
- Depression22%
- Mood disorders21%
Share of Medicare patients with each condition. A patient can have several.
Marc Sizemore's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Marc T. Sizemore wrote 3,515 Medicare Part D claims in 2024
In 2024, Marc Sizemore wrote 3,515 Medicare Part D claims for 412 patients. 90% of them were for generic drugs. CMS names the drug for 2,954 of them, across 89 drugs with 11 or more claims each, at $191,392 in total drug cost.
Marc Sizemore's Part D claims by kind of drug, 2024
- Generic3,157 claims90%
- Brand-name342 claims10%
- Other16 claims0%
Marc Sizemore's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Marc Sizemore's Part D claims, 2024
- Opioids4%124 of 3,515 claims
- Antibiotics9%322 of 3,515 claims
- Antipsychotics, patients 65 and over1%50 of 3,515 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Marc T. Sizemore scored 24 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 24 out of 100 for Marc Sizemore for performance year 2024, reported individually. Marc Sizemore accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Marc Sizemore as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Marc Sizemore's MIPS scores, performance year 2024
- 24of 100Final score
- 0of 100Quality
- 0of 100Improvement Activities
- 80of 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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Marc T. Sizemore received $947 in industry payments from 2024 to 2025
CMS Open Payments shows 50 general payments to Marc Sizemore from 13 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $322.
General payments to Marc Sizemore by program year, 2024 to 2025
Companies that paid Marc Sizemore the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Marc T. Sizemore'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 DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)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) |
| 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 Marc T. Sizemore
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Marc T. Sizemore's NPI number?
Marc T. Sizemore's NPI number is 1043419138. It was assigned on July 17, 2007, and it is active in the NPI Registry.
What does Marc T. Sizemore specialize in?
Marc T. Sizemore is a family nurse practitioner in Visalia, California. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).
Where does Marc T. Sizemore practice?
Marc Sizemore practices at 231 E Caldwell Ave, Visalia, CA 93277. Marc Sizemore's primary practice is Immediate Care Medical Group, Inc. in Visalia, California. Dmand AI also links Marc Sizemore to 3 home health agencies.
What is Marc T. Sizemore's office phone number?
The practice phone on file for Marc Sizemore is (559) 622-9800.
What is Marc T. Sizemore's medical license number?
Marc Sizemore holds California license 17384.
Which hospitals is Marc T. Sizemore affiliated with?
Marc Sizemore is affiliated with Kaweah Health Medical Center.
What medical group is Marc T. Sizemore part of?
Marc Sizemore is linked to Immediate Care Center.
Does Marc T. Sizemore accept Medicare?
Yes. CMS data shows Marc Sizemore billed Medicare for 1,668 services in 2024, and Marc Sizemore accepts Medicare assignment.
Does Marc T. Sizemore offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Marc Sizemore as offering telehealth services.
What is Marc T. Sizemore's MIPS score?
Marc Sizemore's MIPS final score for performance year 2024 is 24 out of 100, reported individually.
Show 5 more questionsShow fewer questions
How many Medicare patients does Marc T. Sizemore see?
CMS counts 479 Medicare patients who saw Marc Sizemore in 2024, with an average age of 74.
What services does Marc T. Sizemore bill to Medicare?
In 2024, Marc Sizemore's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and injected or infused drug (J3301).
What drugs does Marc T. Sizemore prescribe most?
In 2024 Medicare Part D data, Marc Sizemore's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Omeprazole.
Has Marc T. Sizemore received payments from drug or device companies?
CMS Open Payments shows $947 in general payments to Marc Sizemore from 13 companies from 2024 to 2025. The largest total came from Abbvie Inc.
How long has Marc T. Sizemore been practicing?
Marc Sizemore graduated from medical school in 2007, 19 years ago.
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