1. Home
  2. Directory
  3. California
  4. Laguna Hills
  5. Internal Medicine
  6. NPI Profile

DR. ALAN MARCUS M.D
NPI 1275631657
Internal Medicine - Endocrinology, Diabetes & Metabolism in Laguna Hills, CA

Active since September 20, 2006PECOS Enrolled
24422 AVENIDA DE LA CARLOTA STE 375, LAGUNA HILLS, CA 92653(949) 770-4177(949) 472-0305 Get Directions Write a Review

NPPES record last updated: November 14, 2025. Verified against the NPPES registry weekly; last sync: September 20, 2026.

About Dr. Alan Marcus M.d NPPES

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

DR. ALAN MARCUS M.D (NPI 1275631657) is an individual endocrinology, diabetes & metabolism provider in Laguna Hills, California, licensed in California (A39696) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1275631657
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. ALAN MARCUSCredential: M.D
Location Address24422 AVENIDA DE LA CARLOTA STE 375Laguna Hills, CA 92653-3668
Mailing Address24012 Calle De La Plata, 345Laguna Hills, CA 92653-3621 · (949) 770-4177 · Fax (949) 770-9639
Phone(949) 770-4177
Fax(949) 472-0305
Sole ProprietorNo
Enumeration DateSeptember 20, 2006
Last NPPES UpdateNovember 14, 2025
NPPES CertifiedNovember 14, 2025
✔ NPI 1275631657 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in CA · A39696
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
24422 AVENIDA DE LA CARLOTA STE 375, Laguna Hills, CA 92653
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alan Marcus M.d 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92653 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.

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 Alan Marcus's NPI number?

The NPI number for Alan Marcus is 1275631657. It was assigned to this individual provider in the NPPES registry on September 20, 2006.

Where is Alan Marcus located?

Alan Marcus practices at 24422 Avenida De La Carlota Ste 375, Laguna Hills, CA 92653. The listed phone number is (949) 770-4177.

What is Alan Marcus's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Alan Marcus enrolled in Medicare?

Yes. Alan Marcus is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alan Marcus was last updated on November 14, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.