DR. ANDREW H MESSIHA MD
NPI 1700018926
Anesthesiology - Pain Medicine in Laguna Hills, CA

Q: What is Andrew Messiha's NPI number?

The NPI number for Andrew Messiha is 1700018926. It was assigned to this individual provider in the NPPES registry on August 20, 2009.

Q: What is Andrew Messiha's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Q: When was this NPI record last updated?

The NPPES record for Andrew Messiha was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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 August 20, 2009PECOS EnrolledAccepts Medicare Assignment

100/100

CMS Quality Rating

23521 PASEO DE VALENCIA STE 204, LAGUNA HILLS, CA 92653(949) 458-2026(949) 273-8053 Get Directions Write a Review

NPPES record last updated: November 3, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 3, 2025, Feb 4, 2025, Apr 4, 2024 and 6 more (9 updates tracked since 2017).

On this page

About Dr. Andrew H Messiha Md NPPES

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

DR. ANDREW H MESSIHA MD (NPI 1700018926) is an individual pain medicine provider in Laguna Hills, California, licensed in California (A135825) and active in the NPI registry since August 2009. He is enrolled in Medicare PECOS and is a graduate of Pennsylvania State University College Of Medicine (2009).

NPPES Registry Identity

NPI1700018926

Entity TypeIndividualMale

Primary Taxonomy207LP2900X

Provider Legal NameDR. ANDREW H MESSIHACredential: MD

Location Address23521 PASEO DE VALENCIA STE 204Laguna Hills, CA 92653-3101

Mailing Address23521 Paseo De Valencia Ste 204Laguna Hills, CA 92653-3101 · (949) 458-2026 · Fax (924) 273-8053

Phone(949) 458-2026

Fax(949) 273-8053

Sole ProprietorNo

Medical School CMSPennsylvania State University College Of MedicineGraduated 2009

Enumeration DateAugust 20, 2009

Last NPPES UpdateNovember 3, 20259 updates tracked since enumeration

NPPES CertifiedNovember 3, 2025

✔ NPI 1700018926 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

License✔ Licensed in CA · A135825

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Also ListedAnesthesiologyTaxonomy 207L00000X · License A135825 (CA)

23521 PASEO DE VALENCIA STE 204, Laguna Hills, CA 92653

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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. Andrew H Messiha 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 ID7911141288

PECOS Enrollment IDI20150716000091

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 Reassignment

Medicare enrollment records show Andrew Messiha reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Andrew H Messiha MD

Same address

Pain Medicine

23521 PASEO DE VALENCIA STE 204
Laguna Hills, CA 92653

Reassigned Medicare billing, California enrollment
2 clinicians in this Medicare group

NPI 1487251542 (949) 458-2026

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 18

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.

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.

1,322 services262 patients

Evaluation of psychological test, first hour 96130

This procedure involves a professional assessing your mental health using standardized tests. It's the initial hour of a process that helps understand your emotional well-being and cognitive abilities. It's completely non-invasive and confidential.

187 services176 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

126 services94 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

121 services121 patients

Injection of substance into lower spine canal using imaging guidance 62323

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

119 services86 patients

Injection, dexamethasone sodium phosphate, 1 mg J1100

Dexamethasone sodium phosphate is a medication given via injection. It is a type of steroid that helps reduce inflammation and immune responses. It can be used to treat a variety of conditions, such as allergies, skin conditions, arthritis, and more.

68 services39 patients

Injection of substance into middle or upper spine canal using imaging guidance 62321

This procedure involves injecting a substance into your middle or upper spine canal. It's performed under imaging guidance to ensure accuracy. The substance can help diagnose or treat various conditions, providing relief from symptoms.

43 services29 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level 64493

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

36 services21 patients

Injection of lower or sacral spine facet joint using imaging guidance, second level 64494

This procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.

33 services20 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level 64483

This procedure involves injecting a mix of numbing and anti-inflammatory medication into a specific nerve root in the lower back. It helps manage pain and reduce inflammation. The process is guided by imaging technology for precision.

32 services31 patients

Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level 64484

This procedure involves injecting an anesthetic or steroid drug into the sacral spine nerve root. It's done under imaging guidance to ensure accuracy. The process can be repeated for each additional level of the spine to help manage pain or inflammation.

30 services29 patients

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

Low osmolar contrast material with 300-399 mg/ml iodine concentration is a diagnostic tool used in imaging procedures. It helps to enhance the visibility of specific areas in the body, aiding in accurate diagnosis. It's safe and generally well-tolerated by patients.

26 services21 patients

Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance 27096

This procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.

20 services18 patients

Aspiration and/or injection of fluid large joint using ultrasound guidance 20611

This procedure involves using ultrasound technology to accurately locate a large joint, usually the knee or shoulder. A needle is then inserted to either extract fluid (aspiration) or inject medication. The ultrasound helps ensure precision and safety.

19 services11 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint 64635

This procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.

19 services13 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

19 services17 patients

Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml Q9967

19 services14 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint 64636

This procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.

17 services12 patients

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

100

Promoting Interoperability

100

Improvement Activities

Other Providers at the Same Location NPPES 4

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

JOSHUA CHASTAIN BARNHILL M.D.

Anesthesiology (Pain Medicine)

23521 PASEO DE VALENCIA STE 204
LAGUNA HILLS, CA 92653

Orange County (949) 458-2026

ANDREW H MESSIHA MD

Anesthesiology (Pain Medicine)

23521 PASEO DE VALENCIA STE 204
LAGUNA HILLS, CA 92653

Orange County (949) 458-2026

SADDLEBACK PAIN AND SURGICAL CENTER

Clinic/Center (Ambulatory Surgical)

23521 PASEO DE VALENCIA STE 204
LAGUNA HILLS, CA 92653

Orange County (949) 458-2026

MRS. DONNA ROXANNE MURESAN P.A.-C

Physician Assistant (Medical)

23521 PASEO DE VALENCIA STE 204
LAGUNA HILLS, CA 92653

Orange County (949) 458-2026

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 Andrew Messiha's NPI number?

The NPI number for Andrew Messiha is 1700018926. It was assigned to this individual provider in the NPPES registry on August 20, 2009.

Where is Andrew Messiha located?

Andrew Messiha practices at 23521 Paseo De Valencia Ste 204, Laguna Hills, CA 92653. The listed phone number is (949) 458-2026.

What is Andrew Messiha's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Is Andrew Messiha enrolled in Medicare?

Yes. Andrew Messiha 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 organization bills Medicare for Andrew Messiha's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Messiha reassigns Medicare benefits to Andrew H Messiha MD (Laguna Hills, CA). The 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 Andrew Messiha'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 Andrew Messiha was last updated on November 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.