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DR. AARON RICHLER M.D.
NPI 1619350337
Internal Medicine in Los Alamitos, CA

Active since June 30, 2015PECOS EnrolledAccepts Medicare Assignment
10941 BLOOMFIELD ST, LOS ALAMITOS, CA 90720(562) 596-1667(562) 598-6867 Get Directions Write a Review

NPPES record last updated: July 2, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Aaron Richler M.d. NPPES

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

DR. AARON RICHLER M.D. (NPI 1619350337) is an individual internal medicine provider in Los Alamitos, California, licensed in California (A161190) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS and is a graduate of Other (2015).

NPPES Registry Identity

NPI1619350337
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. AARON RICHLERCredential: M.D.
Location Address10941 BLOOMFIELD STLos Alamitos, CA 90720-2530
Mailing Address10941 Bloomfield StLos Alamitos, CA 90720-2530 · (562) 596-1667 · Fax (562) 598-6867
Phone(562) 596-1667
Fax(562) 598-6867
Sole ProprietorNo
Medical School CMSOtherGraduated 2015
Enumeration DateJune 30, 2015
Last NPPES UpdateJuly 2, 2026
NPPES CertifiedJuly 2, 2026
✔ NPI 1619350337 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in CA · A161190✔ Licensed in NY · 289590
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
10941 BLOOMFIELD ST, Los Alamitos, CA 90720
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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

Dr. Aaron Richler 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 ID6103176102
PECOS Enrollment IDI20190730003391
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

3

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

Medicine And Nephrology Associates
Same address
Nephrology
10941 BLOOMFIELD ST STE A
Los Alamitos, CA 90720
  • Reassigned Medicare billing, California enrollment
  • 7 clinicians in this Medicare group
NPI 1114151958 (562) 596-1667
Healthcare Partners Affiliates Medical Group
14 mi
Addiction Medicine
14591 NEWPORT AVE
Tustin, CA 92780
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1891981502 (714) 442-4864
Elevate Health Group A Medical Corporation
26 mi
Internal Medicine
214 N CENTRAL AVE
Glendale, CA 91203
  • Reassigned Medicare billing, California enrollment
  • 19 clinicians in this Medicare group
NPI 1447632518 (818) 246-8000

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 4

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 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.
3,601 services712 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.
220 services197 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
114 services107 patients
Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more 99308
A follow-up nursing facility visit per day is a daily check-up service provided by healthcare professionals. It lasts around 15 minutes and involves assessing your health status, monitoring your recovery progress, and addressing any concerns you may have about your health or treatment.
13 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 90720 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.

Other Providers at the Same Location NPPES 10

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

JACK RUBIN MD, A PROF CORPORATION
Internal Medicine (Nephrology)
10941 BLOOMFIELD ST
LOS ALAMITOS, CA 90720
Orange County (562) 596-1667
DR. MICHAEL WELING LAUERMANN M.D.
Specialist
10941 BLOOMFIELD ST, SUITE A.
LOS ALAMITOS, CA 90720
Orange County (562) 799-9500
DR. HOSSEIN EFTEKHARI MD
Internal Medicine
10941 BLOOMFIELD ST
LOS ALAMITOS, CA 90720
Orange County (832) 483-1509
MS. KATHLEEN JUNE FULMER ARNP
Nurse Practitioner (Family)
10941 BLOOMFIELD ST, SUITE #A
LOS ALAMITOS, CA 90720
Orange County (568) 596-1667
MS. HEENA M CONTRACTOR M.D.
Internal Medicine
10941 BLOOMFIELD ST, #A
LOS ALAMITOS, CA 90720
Orange County (562) 596-1667
DAVID A. ROSENBERG, M.D., INC
Specialist
10941 BLOOMFIELD ST
LOS ALAMITOS, CA 90720
Orange County (562) 598-7780
MS. TANZINA NASREEN M.D.
Internal Medicine (Nephrology)
10941 BLOOMFIELD ST, SUITE A
LOS ALAMITOS, CA 90720
Orange County (562) 596-1667
HOSSEIN EFTEKHARI MD INC
Internal Medicine (Cardiovascular Disease)
10941 BLOOMFIELD ST
LOS ALAMITOS, CA 90720
Orange County (832) 483-1509

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 Aaron Richler's NPI number?

The NPI number for Aaron Richler is 1619350337. It was assigned to this individual provider in the NPPES registry on June 30, 2015.

Where is Aaron Richler located?

Aaron Richler practices at 10941 Bloomfield St, Los Alamitos, CA 90720. The listed phone number is (562) 596-1667.

What is Aaron Richler's specialty?

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

Is Aaron Richler enrolled in Medicare?

Yes. Aaron Richler 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 organizations bill Medicare for Aaron Richler's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Richler reassigns Medicare benefits to 3 organizations: Medicine And Nephrology Associates (Los Alamitos, CA), Healthcare Partners Affiliates Medical Group (Tustin, CA) and Elevate Health Group A Medical Corporation (Glendale, 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 Aaron Richler'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 Aaron Richler was last updated on July 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.