DR. MARK S GARRISON DO
NPI 1801881503
Obstetrics & Gynecology in Chico, CA

Q: What is Mark Garrison's NPI number?

The NPI number for Mark Garrison is 1801881503. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Q: What is Mark Garrison's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Garrison was last updated on July 12, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 19, 2005PECOS EnrolledAccepts Medicare Assignment

1025 VILLAGE LN, CHICO, CA 95926(530) 566-0132(530) 566-1682 Get Directions Write a Review

NPPES record last updated: July 12, 2010. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Dr. Mark S Garrison Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK S GARRISON DO (NPI 1801881503) is an individual obstetrics & gynecology provider in Chico, California, licensed in California (20A9268) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS and is a graduate of Ohio State University College Of Medicine (1987).

NPPES Registry Identity

NPI1801881503

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameDR. MARK S GARRISONCredential: DO

Location Address1025 VILLAGE LNChico, CA 95926-2812

Mailing Address702 Mangrove Ave, Pmb 313Chico, CA 95926-3948 · (530) 566-0132 · Fax (530) 566-1682

Phone(530) 566-0132

Fax(530) 566-1682

Sole ProprietorNo

Medical School CMSOhio State University College Of MedicineGraduated 1987

Enumeration DateSeptember 19, 2005

Last NPPES UpdateJuly 12, 2010

✔ NPI 1801881503 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · 20A9268

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

Also ListedFamily MedicineTaxonomy 207Q00000X · License 20A9268 (CA)

1025 VILLAGE LN, Chico, CA 95926

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Other Identifiers 5

Other160035735Railroad Medicare

Other20A9268CA · Calif License

Medicare UPINE51854

Medicare PINAP218CA

Medicaid00AX92680CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Mark S Garrison Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6608976634

PECOS Enrollment IDI20070705000319

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Mark Garrison reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Enloe Medical Center

1.4 mi

Obstetrics & Gynecology

1665 ESPLANADE
Chico, CA 95926

Reassigned Medicare billing, California enrollment
48 clinicians in this Medicare group

NPI 1023420726 (530) 895-0423

Glenn Medical Center, LLC

26 mi

Medicare Defined Swing Bed Unit

1133 W SYCAMORE ST
Willows, CA 95988

Reassigned Medicare billing, California enrollment
53 clinicians in this Medicare group

NPI 1336187178 (530) 934-1800

Glenn Medical Center, LLC

26 mi

Rural Health

1133 W SYCAMORE ST
Willows, CA 95988

Reassigned Medicare billing, California enrollment
10 clinicians in this Medicare group

NPI 1356388961 (530) 934-1800

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

19 services18 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

13 services13 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95926 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$133.94 typical visit price

range $58.87 – $176.60

Typical copayment $33.48 (range $14.71 – $44.15)

Most-billed visit code 99204

Established Patient

$73.16 typical visit price

range $19.28 – $144.60

Typical copayment $18.29 (range $4.82 – $36.15)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

STEPHANIE BRAZIL MA, ASW

Social Worker (Clinical)