JOHANNA ELIZABETH GERWER MD, MPH
NPI 1043742588
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Diego, CA

Active since April 03, 2017PECOS EnrolledAccepts Medicare Assignment
1809 NATIONAL AVE, SAN DIEGO, CA 92113(619) 515-2300 Get Directions Write a Review

NPPES record last updated: September 13, 2022. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Sep 13, 2022, Sep 5, 2022 (2 updates tracked since 2022).

About Johanna Elizabeth Gerwer Md, Mph NPPES

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

JOHANNA ELIZABETH GERWER MD, MPH (NPI 1043742588) is an individual endocrinology, diabetes & metabolism provider in San Diego, California, licensed in California (A169752) and active in the NPI registry since April 2017. She is enrolled in Medicare PECOS and is a graduate of Texas Tech University Health Science Center School Of Medicine (2017).

NPPES Registry Identity

NPI1043742588
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameJOHANNA ELIZABETH GERWERCredential: MD, MPH
Location Address1809 NATIONAL AVESan Diego, CA 92113-2113
Mailing Address823 Gateway Center WaySan Diego, CA 92102-4541 · (619) 515-2300
Sole ProprietorNo
Medical School CMSTexas Tech University Health Science Center School Of MedicineGraduated 2017
Enumeration DateApril 3, 2017
Last NPPES UpdateSeptember 13, 20222 updates tracked since enumeration
NPPES CertifiedSeptember 13, 2022
NPI 1043742588 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License Licensed in CA · A169752
Definition

An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

1809 NATIONAL AVE, San Diego, CA 92113

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Johanna Elizabeth Gerwer Md, Mph 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 ID8325423502
PECOS Enrollment IDI20220924000132
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92113 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
$140.22 typical visit price
range $62.10 – $184.71
Typical copayment $35.05 (range $15.52 – $46.17)
Most-billed visit code 99204
Established Patient
$108.42 typical visit price
range $20.62 – $151.42
Typical copayment $27.10 (range $5.15 – $37.85)
Most-billed visit code 99214
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 20

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

Nutritionist (Nutrition, Education)
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Physician Assistant
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Nutritionist (Nutrition, Education)
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Dietitian, Registered
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Nutritionist (Nutrition, Education)
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Nutritionist (Nutrition, Education)
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Obstetrics & Gynecology
1809 NATIONAL AVE
SAN DIEGO, CA 92113
Occupational Therapist
1809 NATIONAL AVE
SAN DIEGO, CA 92113

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Johanna Gerwer's NPI number?

The NPI number for Johanna Gerwer is 1043742588. It was assigned to this individual provider in the NPPES registry on April 3, 2017.

Where is Johanna Gerwer located?

Johanna Gerwer practices at 1809 National Ave, San Diego, CA 92113. The listed phone number is (619) 515-2300.

What is Johanna Gerwer's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Johanna Gerwer enrolled in Medicare?

Yes. Johanna Gerwer is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Johanna Gerwer was last updated on September 13, 2022. NPI Profile syncs with the weekly NPPES data releases published by CMS.