JOHN J. HOLLOWED, JR. MD – NPI #1891115572
Internal Medicine

An area of medicine within the subspecialty of cardiology, which uses specialized imaging and other diagnostic techniques to evaluate blood flow and pressure in the coronary arteries and chambers of the heart and uses technical procedures and medications to treat abnormalities that impair the function of the cardiovascular system.

Health Care Provider Taxonomy Code for Internal Medicine

JOHN HOLLOWED, JR. is a physician located in LAGUNA HILLS, CA. NPPES has assigned the NPI number 1891115572 to JOHN HOLLOWED, JR. on April 22, 2014. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 207RI0011X from the Health Care Provider Taxonomy code set, which is classified as Internal Medicine, specializing in Interventional Cardiology

The NPI profile was last updated on May 18, 2026. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for JOHN HOLLOWED, JR. below.

NPI Profile for
JOHN J. HOLLOWED, JR.

NPI Number
1891115572
Enumeration Date

(more than 12 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
JOHN J. HOLLOWED, JR.
Credentials
MD
Primary location
24022 CALLE DE LA PLATA STE 500
LAGUNA HILLS, CA 92653-7612
Phone: (714) 389-1843 Fax: (714) 445-0245
1 Other location(s):
14445 Olive View Dr UCLA Olive View Medical Center
Department of Internal Medicine
Sylmar, CA 91342
Phone: (818) 364-3205
Mailing address
3080 BRISTOL ST STE 150
COSTA MESA, CA 92626-3068
Phone: (714) 389-1843 Fax: (714) 445-0245
Sole Proprietor
Yes
Updated
Certification Date
May 18, 2026

Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.

Identifiers

Identifiers for JOHN HOLLOWED, JR.

Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.

DescriptionIssuerStateIdentifier
otherPACIFIC CARDIOVASCULAR ASSOCIATESCA1700821691
Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207RI0011X
- Internal Medicine / Interventional Cardiology (Primary)		 CA A142140

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.

Additional Information

Education
CREIGHTON UNIVERSITY SCHOOL OF MEDICINE - Graduated 2014
Offers Telehealth Services
Yes - Telehealth services allows you to talk to your health care provider using audio/video communications, such as Zoom, without actually going in to the doctor's office
Accepts Medicare
This provider accepts Medicare-approved amount as payment in full. The Medicare-approved amount is the total the provider can be paid. When a provider accepts the Medicare-approved amount as payment, you won't be billed for more than the Medicare deductible & coinsureance.
Medicare Ordering & Referring
Provider can:
  • Refer to Part B
  • Order Durable Medical Equipment
  • Refer to Home Health Agency
  • Order Power Mobility Devices
Affiliations
JOHN HOLLOWED, JR. is affiliated with the following medical group(s):
  • HOSPITAL
    • LAC/OLIVE VIEW-UCLA MEDICAL CENTER
      14445 OLIVE VIEW DRIVE
      SYLMAR, CA 91342
    • RONALD REAGAN UCLA MEDICAL CENTER
      757 WESTWOOD PLAZA
      LOS ANGELES, CA 90095
    • SANTA MONICA - UCLA MED CTR & ORTHOPAEDIC HOSPITAL
      1250 16TH STREET
      SANTA MONICA, CA 90404

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