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Edit this profileAt a glance
- 1025 Village Ln, Chico, CA 95926
About Dr. Garrison
Mark S. Garrison, DO is a healthcare provider in Chico, CA specializing in obstetrics & gynecology. Mark trained at Ohio State University College of Medicine, graduating in 1987. Mark is also listed as specializing in family medicine. Medicare claims data shows Mark provided 45 services to 44 patients. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and new patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more. This provider record is associated with NPI 1801881503.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (530) 566-0132
- Email not available
Practice Locations
1025 VILLAGE LN
Chico, CA 95926
Conditions Commonly Evaluated or Treated
Within Obstetrics and Gynecology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Pelvic pain and benign gynecology
- Uterine fibroids
- Chronic pelvic pain
- Ovarian cysts
- Painful intercourse
- Pelvic organ prolapse
- Urinary incontinence in women
Most searched conditions
Infections and vulvovaginal conditions
- Bacterial vaginosis
- Genital herpes
- Genital warts
- Vulvodynia
Menstrual and hormonal
- Absent periods
- Genitourinary syndrome of menopause
- Painful periods
- Perimenopause
- Premenstrual syndrome
Pregnancy
- Ectopic pregnancy
- Gestational diabetes
- Hyperemesis gravidarum
- Miscarriage
- Placenta previa
- Postpartum depression
- Preeclampsia
- Preterm labor
Cancer and precancer
- Abnormal cervical cells and cervical dysplasia
- Cervical cancer
- Endometrial cancer
- Endometrial hyperplasia
- Ovarian cancer
Contraception
- Birth Control Side Effects
Fertility
- Infertility
- Recurrent Miscarriages
Infections
- Chlamydia
- Pelvic Inflammatory Disease (PID)
Pregnancy Complications
- High-risk pregnancy
- Twins or triplets
Vaginal & Vulvar Health
Procedures & services
Most searched procedures
- C-section
- Hysterectomy
- IUD insertion
- Pap smear
- Ultrasound
Contraception and office treatment
Pregnancy and delivery
- External cephalic version
- Forceps- or vacuum-assisted delivery
- Prenatal care
- Vaginal childbirth
Preventive and diagnostic
- Colposcopy
- Endometrial biopsy
- Human papillomavirus testing
Birth Control
Contraception
Diagnostic Procedures
- Amniocentesis
Fertility
- Egg freezing
- Intrauterine Insemination (IUI)
Hormone & Menopause
- Hormone Replacement Therapy (HRT) Consultation
Laparoscopic and adnexal surgery
- Gynecologic laparoscopy
- Ovarian cyst removal
- Ovary removal
Pelvic floor
- Pelvic organ prolapse surgery
- Sling surgery for stress incontinence
Postpartum Care
Pregnancy & Prenatal
- Fetal Heart Rate Monitoring
- Prenatal genetic screening
Preventive Care
Preventive Screening
- STI Screening Panel
Routine Exams
Surgeries
- Endometriosis Excision Surgery
- Labia Reduction
- Tubal Ligation ("Tubes Tied")
Uterine and cervical procedures
- Cervical cone biopsy
- Dilation and curettage
- Endometrial ablation
- Hysteroscopy
- LEEP
- Myomectomy
Procedures Most Often Billed to Medicare
45 services · 44 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
19 | As often as other peers in OB-GYN |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
13 | Less often than most peers in OB-GYN |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
13 | Less often than most peers in OB-GYN |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other OB-GYNs in Chico 8
Same specialty, same city.
Trained at Ohio State University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1987 at Ohio State University College of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Garrison?
Dr. Garrison is an OB-GYN in Chico, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Obstetrics & Gynecology”.
NPI registry
What is Dr. Garrison's address?
Dr. Garrison is listed at 1025 Village Ln, Chico, CA 95926. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Garrison?
The number on file is (530) 566-0132. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Garrison?
Dr. Garrison's National Provider Identifier is 1801881503. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Garrison train?
Dr. Garrison attended Ohio State University College of Medicine, graduating in 1987. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Garrison have?
Dr. Garrison has 39 years experience. Calculated from a graduation year of 1987, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Garrison perform?
According to Medicare billing data, Dr. Garrison the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Garrison's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Garrison. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.