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SAMER S. ASSAF M.D.
NPI 1871682179
Internal Medicine in San Diego, CA

Active since October 12, 2006PECOS EnrolledAccepts Medicare Assignment
73.62/100
CMS Quality Rating
2020 GENESEE AVE, SAN DIEGO, CA 92123(858) 499-2600(858) 616-8258 Get Directions Write a Review

NPPES record last updated: June 14, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Samer S. Assaf M.d. NPPES

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

SAMER S. ASSAF M.D. (NPI 1871682179) is an individual internal medicine provider in San Diego, California, licensed in California (A68784) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Rush Medical College Of Rush University (1997).

NPPES Registry Identity

NPI1871682179
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameSAMER S. ASSAFCredential: M.D.
Location Address2020 GENESEE AVESan Diego, CA 92123-4219
Mailing Address2020 Genesee AveSan Diego, CA 92123-4219 · (858) 499-2600 · Fax (858) 616-8258
Phone(858) 499-2600
Fax(858) 616-8258
Sole ProprietorNo
Medical School CMSRush Medical College Of Rush UniversityGraduated 1997
Enumeration DateOctober 12, 2006
Last NPPES UpdateJune 14, 2013
✔ NPI 1871682179 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 · A68784
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.
2020 GENESEE AVE, San Diego, CA 92123
Open in Google Maps ↗

Other Identifiers 2

Medicare PINWA68784BCA
Medicare UPIN17983CA

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

Samer S. Assaf M.d. 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 ID6901901024
PECOS Enrollment IDI20070418000606
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 Samer Assaf reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sharp Rees-Stealy Medical Group, Inc
3.5 mi
Internal Medicine
5651 COPLEY DR STE A
San Diego, CA 92111
  • Reassigned Medicare billing, California enrollment
  • 1,233 clinicians in this Medicare group
NPI 1285616177 (858) 262-6666

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.
196 services125 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.
132 services84 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
37 services37 patients
Influenza vaccine, inactivated 90653
The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.
33 services33 patients
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use 90677
The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.
27 services27 patients
Administration of pneumococcal vaccine G0009
The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.
27 services27 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92123 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

73.62/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality74.56
Improvement Activities40
Cost58.69

Referred Medical Equipment & Supplies CMS DME claims 5

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
6 suppliers21 claims82 services$6.33 avg. paid by Medicare
Intermittent urinary catheter, with insertion supplies A4353
DME-Orthotic Devices · category DF008N
1 supplier12 claims2,380 services$6.73 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
3 suppliers18 claims18 services$63.13 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
2 suppliers17 claims17 services$32.06 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers16 claims16 services$198.69 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.

DR. TOVA S STEINHAUSER MD
Family Medicine
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 499-2600
MRS. ALANA M DEMBITSKY MD
Internal Medicine
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 499-2710
DR. DOREEN ISMAIL IBRAHIM M.D
Internal Medicine
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 616-2600
BOB NAIM BERNABA M.D.
Pathology (Clinical Pathology/Laboratory Medicine)
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 616-8033
JOHN J. GRANT M.D.
Family Medicine
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 499-2600
DR. CURTIS CLAYTON HORTON M.D.
Surgery (Vascular Surgery)
2020 GENESEE AVE, SHARP REES STEALY GENERAL SURGERY
SAN DIEGO, CA 92123
San Diego County (858) 616-8200
CYNTHIA SHANNON LIN M.D.
Internal Medicine
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 499-2600
SHARP HEALTHCARE
Clinical Medical Laboratory
2020 GENESEE AVE
SAN DIEGO, CA 92123
San Diego County (858) 616-8400

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 Samer Assaf's NPI number?

The NPI number for Samer Assaf is 1871682179. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Where is Samer Assaf located?

Samer Assaf practices at 2020 Genesee Ave, San Diego, CA 92123. The listed phone number is (858) 499-2600.

What is Samer Assaf's specialty?

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

Is Samer Assaf enrolled in Medicare?

Yes. Samer Assaf 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 Samer Assaf's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Samer Assaf reassigns Medicare benefits to Sharp Rees-Stealy Medical Group, Inc (San Diego, 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 Samer Assaf'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 Samer Assaf was last updated on June 14, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.