DR. MELISSA ENRIQUEZ SIMS M.D., M.P.H.
NPI 1508064262
Radiology - Diagnostic Radiology in San Diego, CA

Q: What is Melissa Sims's NPI number?

The NPI number for Melissa Sims is 1508064262. It was assigned to this individual provider in the NPPES registry on July 4, 2007. The provider is also known as Dr. Maria Elissa Enriquez M.D., M.P.H..

Q: Where is Melissa Sims located?

Melissa Sims practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.

Q: What is Melissa Sims's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Q: Is Melissa Sims enrolled in Medicare?

Yes. Melissa Sims is registered in the Medicare PECOS enrollment system.

Q: Which organizations bill Medicare for Melissa Sims's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Melissa Sims reassigns Medicare benefits to 3 organizations: Regents Of The University Of California (San Diego, CA), Health Diagnostics Of California A Professional Corporation (Riverside, CA) and Permanente Medical Group Inc (Santa Clara, CA). Each 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 Melissa Sims's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Q: When was this NPI record last updated?

The NPPES record for Melissa Sims was last updated on August 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since July 04, 2007PECOS Enrolled

200 W ARBOR DR, SAN DIEGO, CA 92103(800) 926-8273(888) 539-8781 Get Directions Write a Review

NPPES record last updated: August 22, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 22, 2024, Jul 12, 2023 (2 updates tracked since 2023).

On this page

About Dr. Melissa Enriquez Sims M.d., M.p.h. NPPES

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

DR. MELISSA ENRIQUEZ SIMS M.D., M.P.H. (NPI 1508064262) is an individual diagnostic radiology provider in San Diego, California, licensed in California (A106341) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS and maintains 5 additional practice locations.

NPPES Registry Identity

NPI1508064262

Entity TypeIndividualFemale

Primary Taxonomy2085R0202X

Provider Legal NameDR. MELISSA ENRIQUEZ SIMSCredential: M.D., M.P.H.

Location Address200 W ARBOR DRSan Diego, CA 92103-9000

Mailing AddressFile 57326Los Angeles, CA 90074-0001

Phone(800) 926-8273

Fax(888) 539-8781

Sole ProprietorYes

Enumeration DateJuly 4, 2007

Last NPPES UpdateAugust 22, 20242 updates tracked since enumeration

NPPES CertifiedAugust 22, 2024

✔ NPI 1508064262 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in CA · A106341

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

200 W ARBOR DR, San Diego, CA 92103

Open in Google Maps ↗

Other Names 1

Former Name (1)Dr. Maria Elissa Enriquez M.d., M.p.h.

Secondary Practice Locations 5

Location 1101 S San Mateo Dr Ste 201San Mateo, CA 94401-3843 · Phone (650) 343-1655

Location 26655 Alvarado RdSan Diego, CA 92120-5208 · Phone (858) 249-6748 · Fax (888) 539-8781

Location 39300 Campus Point DrLA Jolla, CA 92037-1300 · Phone (800) 926-8273 · Fax (888) 539-8781

Location 49400 Campus Point DrLA Jolla, CA 92093-3843 · Phone (800) 926-8273 · Fax (888) 539-8781

Location 5330 Lewis StSan Diego, CA 92103-2108 · Phone (800) 926-8273 · Fax (888) 539-8781

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Melissa Enriquez Sims M.d., M.p.h. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignments

Medicare enrollment records show Melissa Sims reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The University Of California

Same address

Diagnostic Radiology

200 W ARBOR DR
San Diego, CA 92103

Reassigned Medicare billing, California enrollment
360 clinicians in this Medicare group

NPI 1558463927 (800) 926-8273

Health Diagnostics Of California A Professional Corporation

82 mi

Diagnostic Radiology

10111 HOLE AVE
Riverside, CA 92503

Reassigned Medicare billing, California enrollment
67 clinicians in this Medicare group

NPI 1407487531 (951) 352-0555

Permanente Medical Group Inc

418 mi

Internal Medicine

710 LAWRENCE EXPRESSWAY
Santa Clara, CA 95051

Reassigned Medicare billing, California enrollment
20,078 clinicians in this Medicare group

NPI 1073606299 (408) 851-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92103 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

$94.87 typical visit price

range $62.10 – $184.71

Typical copayment $23.71 (range $15.52 – $46.17)

Most-billed visit code 99203

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

Most-billed visit code 99213

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.

Reported Quality Measures

Appropriate Follow-up Imaging for Incidental Abdominal Lesions

Percentage of final reports for abdominal imaging studies for asymptomatic patients aged 18 years and older with one or more of the following noted incidentally with follow_up imaging recommended: - Liver lesion =< 0.5 cm - Cystic kidney lesion < 1.0 cm -…

Lower rates are better for this measure.

87%130 patients

Appropriate Follow-up Imaging for Incidental Thyroid Nodules in Patients

Percentage of final reports for computed tomography (CT), CT angiography (CTA) or magnetic resonance imaging (MRI) or magnetic resonance angiogram (MRA) studies of the chest or neck for patients aged 18 years and older with no known thyroid disease with a…

Lower rates are better for this measure.

98%43 patients

Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques

Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…

90%935 patients

Radiology: Reminder System for Screening Mammograms

Percentage of patients undergoing a screening mammogram whose information is entered into a reminder system with a target due date for the next mammogram

100%107 patients

Radiology: Stenosis Measurement in Carotid Imaging Reports

Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…

100%35 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

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. RAMIN MOTARJEMI M.D.

Internal Medicine (Geriatric Medicine)