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DR. GREGORY SCOTT SPOWART M.D.
NPI 1669475430
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Monterey, CA

Active since May 24, 2005PECOS EnrolledAccepts Medicare Assignment
77.81/100
CMS Quality Rating
23845 HOLMAN HWY, STE 220, MONTEREY, CA 93940(831) 644-0225 Get Directions Write a Review

NPPES record last updated: May 1, 2017. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Gregory Scott Spowart M.d. NPPES

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

DR. GREGORY SCOTT SPOWART M.D. (NPI 1669475430) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Monterey, California, licensed in California (G49645) and active in the NPI registry since May 2005. He is enrolled in Medicare PECOS and is a graduate of University Of California, Davis School Of Medicine (1981).

NPPES Registry Identity

NPI1669475430
Entity TypeIndividualMale
Primary Taxonomy208G00000X
Provider Legal NameDR. GREGORY SCOTT SPOWARTCredential: M.D.
Location Address23845 HOLMAN HWY, STE 220Monterey, CA 93940-5900
Mailing Address2350 W El Camino Real, Fl 2Mountain View, CA 94040-6201 · (650) 934-3546 · Fax (650) 691-6193
Phone(831) 644-0225
Sole ProprietorNo
Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 1981
Enumeration DateMay 24, 2005
Last NPPES UpdateMay 1, 2017
✔ NPI 1669475430 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians
Taxonomy Code208G00000X
License✔ Licensed in CA · G49645
Definition
A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.
23845 HOLMAN HWY, Monterey, CA 93940
Open in Google Maps ↗

Other Identifiers 3

Medicare UPINE57840CA
Medicare ID-Type Unspecified00G496450CA
Medicaid00G496450CA

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. Gregory Scott Spowart 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 ID9335192459
PECOS Enrollment IDI20081020000042
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 Gregory Spowart reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Montage Medical Group
2.8 mi
Internal Medicine
275 THE CROSSROADS BLVD STE A
Carmel, CA 93923
  • Reassigned Medicare billing, California enrollment
  • 155 clinicians in this Medicare group
NPI 1770710709 (831) 658-3639

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 9

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
44 services44 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.
40 services40 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
34 services34 patients
Harvest of vein using an endoscope 33508
Harvesting a vein using an endoscope is a procedure where a small camera is used to help surgeons remove a vein from your body. This vein is often used to bypass a blocked artery, improving blood flow to your heart.
31 services31 patients
Coronary artery bypass using artery graft, 1 graft 33533
A coronary artery bypass with one artery graft is a surgical procedure to improve blood flow to your heart. An artery from another part of your body is used to bypass a blocked or narrowed coronary artery. This can help reduce chest pain and risk of heart attack.
30 services30 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.
23 services21 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93940 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
$184.30 typical visit price
range $61.69 – $184.30
Typical copayment $46.07 (range $15.42 – $46.07)
Most-billed visit code 99205
Established Patient
$76.53 typical visit price
range $20.34 – $151.02
Typical copayment $19.13 (range $5.08 – $37.75)
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.

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.

77.81/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality68.99
Promoting Interoperability100
Improvement Activities40
Cost57.04

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.

DR. NATHAN DAVID LEWANDOWSKI M.D.
Family Medicine
23845 HOLMAN HWY, 227
MONTEREY, CA 93940
Monterey County (831) 624-3579
DR. DAVID THOMAS HUNTLEY MD
Pediatrics
23845 HOLMAN HWY, 309
MONTEREY, CA 93940
Monterey County (831) 625-0445
DR. AMY NICHOLE HJORT MD
Obstetrics & Gynecology
23845 HOLMAN HWY, 227
MONTEREY, CA 93940
Monterey County (831) 582-2100
LINDA-LEE MYERS MD
Family Medicine
23845 HOLMAN HWY, SUITE 318
MONTEREY, CA 93940
Monterey County (831) 625-4972

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 Gregory Spowart's NPI number?

The NPI number for Gregory Spowart is 1669475430. It was assigned to this individual provider in the NPPES registry on May 24, 2005.

Where is Gregory Spowart located?

Gregory Spowart practices at 23845 Holman Hwy Ste 220, Monterey, CA 93940. The listed phone number is (831) 644-0225.

What is Gregory Spowart's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Gregory Spowart enrolled in Medicare?

Yes. Gregory Spowart 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 Gregory Spowart's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Spowart reassigns Medicare benefits to Montage Medical Group (Carmel, 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 Gregory Spowart'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 Gregory Spowart was last updated on May 1, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.