DR. MICHAEL S BASCH M.D.
NPI 1790889350
Internal Medicine in Temecula, CA

Active since September 12, 2006PECOS EnrolledCLIA 05D0950811 · Microscopy
41593 WINCHESTER RD STE 101, TEMECULA, CA 92590(951) 719-1111(951) 719-1122 Get Directions Write a Review

NPPES record last updated: July 2, 2013. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Michael S Basch M.d. NPPES

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

DR. MICHAEL S BASCH M.D. (NPI 1790889350) is an individual internal medicine provider in Temecula, California, licensed in California (015430) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through September 7, 2028, and is a graduate of Other (1994).

NPPES Registry Identity

NPI1790889350
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. MICHAEL S BASCHCredential: M.D.
Location Address41593 WINCHESTER RD STE 101Temecula, CA 92590-4858
Mailing Address41593 Winchester Rd Ste 101Temecula, CA 92590-4858 · (951) 719-1111 · Fax (951) 719-1122
Fax(951) 719-1122
Sole ProprietorYes
Medical School CMSOtherGraduated 1994
Enumeration DateSeptember 12, 2006
Last NPPES UpdateJuly 2, 2013
✔ NPI 1790889350 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 015430
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.
41593 WINCHESTER RD STE 101, Temecula, CA 92590

Other Identifiers 3

Other201922288CA · Tax Identification Number
Medicare UPIN00A623140CA
Medicaid3408935CA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Michael S Basch M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4183685191
PECOS Enrollment IDI20041022000876, I20240507003418
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 Michael Basch reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Internal Medicine
41593 WINCHESTER RD STE 101
Temecula, CA 92590
  • Reassigned Medicare billing, California enrollment
  • 18 clinicians in this Medicare group
Specialist
41593 WINCHESTER RD, STE 101
Temecula, CA 92590
  • Reassigned Medicare billing, California enrollment
Internal Medicine
36485 INLAND VALLEY DR
Wildomar, CA 92595
  • Reassigned Medicare billing, California enrollment
  • 69 clinicians in this Medicare group

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0950811

Michael Basch MD · Temecula, CA
Active · expires Sep 7, 2028
CLIA Number05D0950811
Laboratory TypePhysician Office
Certificate Effective DateSeptember 8, 2026
Certificate Expiration DateSeptember 7, 2028
Laboratory DirectorMichael Basch MD
Laboratory Phone(951) 719-1111
Laboratory LocationMichael Basch MD41593 Winchester Road, Suite 101, Temecula, CA 92590
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 15

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.
1,043 services247 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
248 services132 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
211 services127 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
186 services161 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
159 services145 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.
101 services40 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92590 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
$136.04 typical visit price
range $59.60 – $179.42
Typical copayment $34.01 (range $14.90 – $44.85)
Most-billed visit code 99204
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
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.

Referred Medical Equipment & Supplies CMS DME claims 23

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
19 suppliers46 claims136 services$5.65 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
7 suppliers13 claims19 services$0.77 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
3 suppliers15 claims15 services$31.54 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
4 suppliers11 claims65 services$14.81 avg. paid by Medicare
Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap A7034
DME-Other DME · category DE001N
4 suppliers15 claims15 services$41.27 avg. paid by Medicare
Headgear used with positive airway pressure device A7035
DME-Other DME · category DE001N
4 suppliers11 claims11 services$11.46 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 2

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

Family Medicine
41593 WINCHESTER RD STE 101
TEMECULA, CA 92590
Internal Medicine
41593 WINCHESTER RD STE 101
TEMECULA, CA 92590

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 Michael Basch's NPI number?

The NPI number for Michael Basch is 1790889350. It was assigned to this individual provider in the NPPES registry on September 12, 2006.

Where is Michael Basch located?

Michael Basch practices at 41593 Winchester Rd Ste 101, Temecula, CA 92590. The listed phone number is (951) 719-1111.

What is Michael Basch's specialty?

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

Is Michael Basch enrolled in Medicare?

Yes. Michael Basch is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Michael Basch's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Basch reassigns Medicare benefits to 3 organizations: Inpatient Physicians Network Inc (Temecula, CA), Talia Medical Group, A Professional Corporation (Temecula, CA) and Acute Care Associates Of California PC (Wildomar, 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 Michael Basch's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Does Michael Basch hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0950811) is associated with this NPI, valid through September 7, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Michael Basch was last updated on July 2, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.