Physician Profile
Catherine Dieffenbach, MD
Unclaimed ProfileAbout Dr. Dieffenbach
Catherine Dieffenbach, MD practices obstetrics/gynecology in San Diego, CA. Catherine is a 2014 graduate of University of California, San Diego School of Medicine. Catherine is also listed as specializing in obstetrics & gynecology. Medicare claims data shows Catherine provided 111 services to 101 patients. The services billed most often include established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, cervical or vaginal cancer screening; pelvic and clinical breast examination, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1861810673.
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
- (858) 455-7520
- Email not available
Practice Locations
9339 GENESEE AVENUE SUITE 220
San Diego, CA 92121
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
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
Fertility
Infections
Pregnancy Complications
Vaginal & Vulvar Health
Procedures & services
Most searched procedures
Contraception and office treatment
Pregnancy and delivery
Preventive and diagnostic
Birth Control
Contraception
Diagnostic Procedures
Fertility
Hormone & Menopause
Laparoscopic and adnexal surgery
Pelvic floor
Postpartum Care
Pregnancy & Prenatal
Preventive Care
Preventive Screening
Routine Exams
Surgeries
Uterine and cervical procedures
Procedures Most Often Billed to Medicare
111 services · 101 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina | Imaging | 76830 |
14 | Less often than most peers in Obstetrics/Gynecology |
| Screening mammography | Imaging | 77067 |
11 | Less often than most peers in Obstetrics/Gynecology |
| Screening 3d breast mammography | Imaging | 77063 |
11 | Less often than most peers in Obstetrics/Gynecology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
31 | As often as other peers in Obstetrics/Gynecology |
| Cervical or vaginal cancer screening; pelvic and clinical breast examination | Billing code | G0101 |
17 | Less often than most peers in Obstetrics/Gynecology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
15 | Less often than most peers in Obstetrics/Gynecology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
12 | Less often than most peers in Obstetrics/Gynecology |
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.
Other obstetrics/gynecology specialists at this location 8
Same specialty, same street address — most likely the same department or group.
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 obstetrics/gynecology specialists in San Diego 6
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at University of California, San Diego School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2014 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 7
Providers in CA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Dieffenbach?
Dr. Dieffenbach is an obstetrics/gynecology in San Diego, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Dieffenbach's address?
Dr. Dieffenbach is listed at 9339 Genesee Avenue Suite 220, San Diego, CA 92121. 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. Dieffenbach?
The number on file is (858) 455-7520. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Dieffenbach?
Dr. Dieffenbach's National Provider Identifier is 1861810673. 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. Dieffenbach train?
Dr. Dieffenbach attended University of California, San Diego School of Medicine, graduating in 2014. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Dieffenbach have?
Dr. Dieffenbach has 12 years experience. Calculated from a graduation year of 2014, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Dieffenbach perform?
According to Medicare billing data, Dr. Dieffenbach performs imaging including ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina and screening mammography, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Dieffenbach's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Dieffenbach. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.