DR. JOSEPH M NUSSBAUM MD
NPI 1922033463
Internal Medicine - Infectious Disease in Westlake Village, CA

Q: What is Joseph Nussbaum's NPI number?

The NPI number for Joseph Nussbaum is 1922033463. It was assigned to this individual provider in the NPPES registry on July 12, 2006.

Q: What is Joseph Nussbaum's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Q: When was this NPI record last updated?

The NPPES record for Joseph Nussbaum was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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 12, 2006PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

2325 TOWNSGATE RD, SUITE 100, WESTLAKE VILLAGE, CA 91361(213) 483-0901(213) 483-6650 Get Directions Write a Review

NPPES record last updated: December 4, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. Joseph M Nussbaum Md NPPES

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

DR. JOSEPH M NUSSBAUM MD (NPI 1922033463) is an individual infectious disease provider in Westlake Village, California, licensed in California (F46586) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1981).

NPPES Registry Identity

NPI1922033463

Entity TypeIndividualMale

Primary Taxonomy207RI0200X

Provider Legal NameDR. JOSEPH M NUSSBAUMCredential: MD

Location Address2325 TOWNSGATE RD, SUITE 100Westlake Village, CA 91361-5986

Mailing AddressPo Box 2190La Habra, CA 90632-2190 · (213) 483-0901 · Fax (213) 483-6650

Phone(213) 483-0901

Fax(213) 483-6650

Sole ProprietorYes

Medical School CMSOtherGraduated 1981

Enumeration DateJuly 12, 2006

Last NPPES UpdateDecember 4, 2025

NPPES CertifiedDecember 4, 2025

✔ NPI 1922033463 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RI0200X

License✔ Licensed in CA · F46586

Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

2325 TOWNSGATE RD, Westlake Village, CA 91361

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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

Dr. Joseph M Nussbaum 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 ID345277539

PECOS Enrollment IDI20050719001163

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.

Areas of Expertise CMS Part B claims 3

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

561 services216 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

292 services273 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

52 services41 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91361 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

$140.72 typical visit price

range $62.32 – $185.36

Typical copayment $35.18 (range $15.58 – $46.34)

Most-billed visit code 99204

Established Patient

$108.74 typical visit price

range $20.68 – $151.85

Typical copayment $27.18 (range $5.17 – $37.96)

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.

100/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

98.27

Improvement Activities

Other Providers at the Same Location NPPES

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

SOUTHERN CALIFORNIA INFECTIOUS DISEASE MEDICAL GROUP

Internal Medicine (Infectious Disease)

2325 TOWNSGATE RD, SUITE 100
WESTLAKE VILLAGE, CA 91361

Los Angeles County (213) 483-0901

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 Joseph Nussbaum's NPI number?

The NPI number for Joseph Nussbaum is 1922033463. It was assigned to this individual provider in the NPPES registry on July 12, 2006.

Where is Joseph Nussbaum located?

Joseph Nussbaum practices at 2325 Townsgate Rd Suite 100, Westlake Village, CA 91361. The listed phone number is (213) 483-0901.

What is Joseph Nussbaum's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.

Is Joseph Nussbaum enrolled in Medicare?

Yes. Joseph Nussbaum 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 Joseph Nussbaum was last updated on December 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.