DR. ANDREW DIAMOND GUENTHART M.D.
NPI 1134482805
Surgery - Surgery of the Hand in Morgan Hill, CA

Q: What is Andrew Guenthart's NPI number?

The NPI number for Andrew Guenthart is 1134482805. It was assigned to this individual provider in the NPPES registry on June 19, 2012.

Q: What is Andrew Guenthart's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgery of the Hand, with taxonomy code 2086S0105X.

Q: When was this NPI record last updated?

The NPPES record for Andrew Guenthart was last updated on June 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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 June 19, 2012PECOS EnrolledAccepts Medicare Assignment

16360 MONTEREY RD STE 280, MORGAN HILL, CA 95037(408) 825-1333(408) 825-1335 Get Directions Write a Review

NPPES record last updated: June 9, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 9, 2025, Jan 7, 2025, Oct 17, 2021 and 6 more (9 updates tracked since 2016).

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About Dr. Andrew Diamond Guenthart M.d. NPPES

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

DR. ANDREW DIAMOND GUENTHART M.D. (NPI 1134482805) is an individual surgery of the hand provider in Morgan Hill, California, licensed in Kentucky (51048) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS and is a graduate of Temple University School Of Medicine (2012).

NPPES Registry Identity

NPI1134482805

Entity TypeIndividualMale

Primary Taxonomy2086S0105X

Provider Legal NameDR. ANDREW DIAMOND GUENTHARTCredential: M.D.

Location Address16360 MONTEREY RD STE 280Morgan Hill, CA 95037-5496

Mailing Address16360 Monterey Rd Ste 280Morgan Hill, CA 95037-5496 · (408) 825-1333 · Fax (408) 825-1335

Phone(408) 825-1333

Fax(408) 825-1335

Sole ProprietorNo

Medical School CMSTemple University School Of MedicineGraduated 2012

Enumeration DateJune 19, 2012

Last NPPES UpdateJune 9, 20259 updates tracked since enumeration

NPPES CertifiedJune 9, 2025

✔ NPI 1134482805 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Surgery of the HandAllopathic & Osteopathic Physicians

Taxonomy Code2086S0105X

Licenses✔ Licensed in KY · 51048✔ Licensed in CA · A168013

Definition

A surgeon with expertise in the investigation, preservation and restoration by medical, surgical and rehabilitative means, of all structures of the upper extremity directly affecting the form and function of the hand and wrist.

Also ListedSurgeryTaxonomy 208600000X · License A168013 (CA)

16360 MONTEREY RD STE 280, Morgan Hill, CA 95037

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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 Diamond Guenthart 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 ID446587299

PECOS Enrollment IDI20210628003249

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

Medicare enrollment records show Andrew Guenthart reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bass Medical Group

47 mi

Orthopaedic Surgery

19842 LAKE CHABOT RD
Castro Valley, CA 94546

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

NPI 1093181646 (510) 886-8844

Baptist Health Medical Group Inc

1,814 mi

Family Medicine

2605 KENTUCKY AVE, SUITE 306
Paducah, KY 42003

Reassigned Medicare billing, Kentucky enrollment
967 clinicians in this Medicare group

NPI 1922401611 (270) 415-7653

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 8

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 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.

109 services73 patients

Injection into tendon or ligament 20550

An injection into a tendon or ligament involves placing medication directly into these areas to help reduce inflammation and pain. It's often used for conditions like arthritis or tendonitis. The procedure is quick and usually involves a local anesthetic.

62 services29 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.

42 services35 patients

Injection of carpal tunnel 20526

An injection for carpal tunnel is a treatment to reduce inflammation and swelling in your wrist, which can alleviate pain and numbness. The doctor injects a steroid medication into your wrist area to provide relief.

36 services25 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

36 services25 patients

Aspiration and/or injection of fluid from small joint 20600

This procedure involves inserting a thin needle into a small joint to remove (aspirate) or inject fluid. It can help diagnose conditions, relieve discomfort, or administer medication directly into the joint. It's generally safe with minimal discomfort.

33 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 95037 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

$106.47 typical visit price

range $70.37 – $206.04

Typical copayment $26.61 (range $17.59 – $51.51)

Most-billed visit code 99203

Established Patient

$86.56 typical visit price

range $23.96 – $169.60

Typical copayment $21.64 (range $5.99 – $42.40)

Most-billed visit code 99213

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

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

NORTHERN SURGICAL ASSOCIATES

Surgery (Surgery of the Hand)

16360 MONTEREY RD STE 280
MORGAN HILL, CA 95037

Santa Clara County (408) 825-1333

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 Guenthart's NPI number?

The NPI number for Andrew Guenthart is 1134482805. It was assigned to this individual provider in the NPPES registry on June 19, 2012.

Where is Andrew Guenthart located?

Andrew Guenthart practices at 16360 Monterey Rd Ste 280, Morgan Hill, CA 95037. The listed phone number is (408) 825-1333.

What is Andrew Guenthart's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgery of the Hand, with taxonomy code 2086S0105X.

Is Andrew Guenthart enrolled in Medicare?

Yes. Andrew Guenthart 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 Andrew Guenthart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Andrew Guenthart reassigns Medicare benefits to 2 organizations: Bass Medical Group (Castro Valley, CA) and Baptist Health Medical Group Inc (Paducah, KY). 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 Andrew Guenthart'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 Guenthart was last updated on June 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.