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MARTHA SOSA-JOHNSON MD
NPI 1306926530
Internal Medicine in Orange, CA

Active since October 16, 2006PECOS EnrolledAccepts Medicare Assignment
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH, ORANGE, CA 92868(714) 456-8978 Get Directions Write a Review

NPPES record last updated: February 28, 2008. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Martha Sosa-johnson Md NPPES

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

MARTHA SOSA-JOHNSON MD (NPI 1306926530) is an individual internal medicine provider in Orange, California, licensed in California (000000G74314) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Diego School Of Medicine (1990).

NPPES Registry Identity

NPI1306926530
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameMARTHA SOSA-JOHNSONCredential: MD
Location AddressUCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTHOrange, CA 92868
Mailing AddressPrimary Care Medical Group, Po Box 513620Los Angeles, CA 90051-3620 · (714) 456-6369
Phone(714) 456-8978
Sole ProprietorNo
Medical School CMSUniversity Of California, San Diego School Of MedicineGraduated 1990
Enumeration DateOctober 16, 2006
Last NPPES UpdateFebruary 28, 2008
✔ NPI 1306926530 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 000000G74314
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
UCI MEDICAL CENTER, Orange, CA 92868
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Other Identifiers 1

Medicare PINWG74314ECA

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

Martha Sosa-johnson Md 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 ID6608952361
PECOS Enrollment IDI20080321000186
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 Reassignment

Medicare enrollment records show Martha Sosa-johnson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Uc Regents
0.8 mi
Allergy & Immunology
101 THE CITY DR S
Orange, CA 92868
  • Reassigned Medicare billing, California enrollment
  • 525 clinicians in this Medicare group
NPI 1003864174 (714) 456-8068

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 6

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 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.
492 services227 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
158 services118 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
32 services32 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
32 services32 patients
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.
16 services15 patients
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit G0438
An annual wellness visit is a yearly appointment with your doctor to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's an opportunity to discuss your health status and goals and get a plan tailored for you.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92868 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
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
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.

Referred Medical Equipment & Supplies CMS DME claims 6

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
27 suppliers56 claims126 services$6.30 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
21 suppliers36 claims40 services$1.08 avg. paid by Medicare
Intermittent urinary catheter; straight tip, with or without coating (teflon, silicone, silicone elastomer, or hydrophilic, etc.), each A4351
DME-Orthotic Devices · category DF008N
1 supplier11 claims2,200 services$1.49 avg. paid by Medicare
Ostomy pouch, urinary, with barrier attached, with built-in convexity, with faucet-type tap with valve (1 piece), each A4429
DME-Orthotic Devices · category DF010N
1 supplier12 claims240 services$7.97 avg. paid by Medicare
Tape, waterproof, per 18 square inches A4452
DME-Medical/Surgical Supplies · category DA000N
1 supplier12 claims480 services$0.34 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$28.87 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

CATHERINE CUMMINS MD
Family Medicine
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-8978
ROGER L CRUMLEY MD
Otolaryngology
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-2986
SCOTT RUDKIN MD
Emergency Medicine
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-2986
ANDREW REIKES MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-8978
TALLIE Z BARAM MD
Pediatrics (Neurodevelopmental Disabilities)
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-8978
JOHN C FOX MD
Emergency Medicine
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-2986
MICHAEL J STAMOS MD
Surgery
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-8978
RICHARD S NEWMAN MD
Pathology (Clinical Pathology/Laboratory Medicine)
UCI MEDICAL CENTER, 101 THE CITY DRIVE SOUTH
ORANGE, CA 92868
Orange County (714) 456-2986

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 Martha Sosa-johnson's NPI number?

The NPI number for Martha Sosa-johnson is 1306926530. It was assigned to this individual provider in the NPPES registry on October 16, 2006.

Where is Martha Sosa-johnson located?

Martha Sosa-johnson practices at Uci Medical Center 101 The City Drive South, Orange, CA 92868. The listed phone number is (714) 456-8978.

What is Martha Sosa-johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Martha Sosa-johnson enrolled in Medicare?

Yes. Martha Sosa-johnson 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.

Which organization bills Medicare for Martha Sosa-johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Martha Sosa-johnson reassigns Medicare benefits to Uc Regents (Orange, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Martha Sosa-johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Martha Sosa-johnson was last updated on February 28, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.