DR. LOUIS C GARROT M.D.
NPI 1609941335
Internal Medicine - Hematology & Oncology in Marietta, GA

Q: What is Louis Garrot's NPI number?

The NPI number for Louis Garrot is 1609941335. It was assigned to this individual provider in the NPPES registry on November 21, 2006.

Q: What is Louis Garrot's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Q: When was this NPI record last updated?

The NPPES record for Louis Garrot was last updated on August 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.

Active since November 21, 2006PECOS EnrolledAccepts Medicare Assignment

68.38/100

CMS Quality Rating

790 CHURCH ST NE, SUITE 335, MARIETTA, GA 30060(770) 590-8311(770) 590-8313 Get Directions Write a Review

NPPES record last updated: August 7, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 7, 2024, Dec 1, 2020, Nov 23, 2020 and 1 more (4 updates tracked since 2020).

On this page

About Dr. Louis C Garrot M.d. NPPES

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

DR. LOUIS C GARROT M.D. (NPI 1609941335) is an individual hematology & oncology provider in Marietta, Georgia, licensed in Georgia (59157) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, is affiliated with Northside Hospital Forsyth, and is a graduate of Other (1999).

NPPES Registry Identity

NPI1609941335

Entity TypeIndividualMale

Primary Taxonomy207RH0003X

Provider Legal NameDR. LOUIS C GARROTCredential: M.D.

Location Address790 CHURCH ST NE, SUITE 335Marietta, GA 30060-7282

Mailing Address1835 Savoy Dr, Suite 300Atlanta, GA 30341-1072 · (770) 590-8311 · Fax (770) 590-8313

Phone(770) 590-8311

Fax(770) 590-8313

Sole ProprietorNo

Medical School CMSOtherGraduated 1999

Enumeration DateNovember 21, 2006

Last NPPES UpdateAugust 7, 20244 updates tracked since enumeration

NPPES CertifiedAugust 7, 2024

✔ NPI 1609941335 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

License✔ Licensed in GA · 59157

Definition

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

790 CHURCH ST NE, Marietta, GA 30060

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Other Identifiers 2

Medicaid127339013DGA

Medicaid127339013EGA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Absolute Total Care, Ambetter Health, Ambetter of Alabama and more.Insurance ›

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. Louis C Garrot 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 ID9931209673

PECOS Enrollment IDI20070711000335

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 Louis Garrot reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Nsh Cancer Institute Professional Services G, LLC

12 mi

Hematology & Oncology

1100 JOHNSON FERRY RD NE, SUITE 600
Atlanta, GA 30342

Reassigned Medicare billing, Georgia enrollment
163 clinicians in this Medicare group

NPI 1124379284 (404) 851-6378

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 10

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.

664 services265 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.

238 services112 patients

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.

92 services47 patients

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.

28 services28 patients

Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

26 services20 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.

23 services23 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northside Hospital Forsyth

Acute Care Hospitals · Cumming, GA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110005

Location1200 Northside Forsyth DriveCumming, GA 30041 · Forsyth County

Birthing friendly

Northside Hospital Cherokee

Acute Care Hospitals · Canton, GA

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number110008

Location450 Northside Cherokee BoulevardCanton, GA 30115 · Cherokee County

Emergency services Birthing friendly

Wellstar Kennestone Regional Medical Center

Acute Care Hospitals · Marietta, GA

4/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number110035

Location677 Church StreetMarietta, GA 30060 · Cobb County

Emergency services Birthing friendly

Wellstar Cobb Medical Center

Acute Care Hospitals · Austell, GA

2/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number110143

Location3950 Austell RdAustell, GA 30106 · Cobb County

Birthing friendly

Northside Hospital

Acute Care Hospitals · Atlanta, GA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110161

Location1000 Johnson Ferry Road, NEAtlanta, GA 30342 · Fulton County

Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 30060 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

$172.43 typical visit price

range $56.84 – $172.43

Typical copayment $43.10 (range $14.21 – $43.10)

Most-billed visit code 99205

Established Patient

$100.20 typical visit price

range $18.22 – $140.40

Typical copayment $25.05 (range $4.55 – $35.10)

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.

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.

68.38/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

70.82

Improvement Activities

Cost

40.24

Other Providers at the Same Location NPPES 20

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

PROACTIVE PHYSICIANS OF MARIETTA, PC

Clinic/Center (Primary Care)

790 CHURCH ST NE, SUITE 220
MARIETTA, GA 30060

Cobb County (678) 753-9300

JAMES E ROBERTSON MD

Radiology (Diagnostic Radiology)

790 CHURCH ST NE, STE 400
MARIETTA, GA 30060

Cobb County (770) 952-8899

MEENAKSHI HEMA KAKARALA MD

Internal Medicine

790 CHURCH ST NE, SUITE 250
MARIETTA, GA 30060

Cobb County (678) 797-8201

THOMAS W HINZ MD

Radiology (Diagnostic Radiology)

790 CHURCH ST NE, STE 400
MARIETTA, GA 30060

Cobb County (770) 952-8899

DR. SHAYA TAGHECHIAN MD

Urology

790 CHURCH ST NE, SUITE 430
MARIETTA, GA 30060

Cobb County (770) 429-9100

DR. JOSEPH H MOYERS MD

Radiology (Diagnostic Radiology)

790 CHURCH ST NE, STE 400
MARIETTA, GA 30060

Cobb County (770) 952-8899

ROBERT V PHAM MD

Radiology (Diagnostic Radiology)

790 CHURCH ST NE, STE 400
MARIETTA, GA 30060

Cobb County (770) 952-8899

MARTIN L SILBIGER MD

Radiology (Diagnostic Radiology)

790 CHURCH ST NE, STE 400
MARIETTA, GA 30060

Cobb County (770) 952-8899

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 Louis Garrot's NPI number?

The NPI number for Louis Garrot is 1609941335. It was assigned to this individual provider in the NPPES registry on November 21, 2006.

Where is Louis Garrot located?

Louis Garrot practices at 790 Church St NE Suite 335, Marietta, GA 30060. The listed phone number is (770) 590-8311.

What is Louis Garrot's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Louis Garrot enrolled in Medicare?

Yes. Louis Garrot 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 Louis Garrot's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Louis Garrot reassigns Medicare benefits to Nsh Cancer Institute Professional Services G, LLC (Atlanta, GA). 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 Louis Garrot's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Louis Garrot accept?

Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 1 other insurer list Louis Garrot as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Louis Garrot affiliated with any hospitals?

According to CMS data, Louis Garrot is affiliated with Northside Hospital Forsyth, Northside Hospital Cherokee, Wellstar Kennestone Regional Medical Center, Wellstar Cobb Medical Center and Northside Hospital.

When was this NPI record last updated?

The NPPES record for Louis Garrot was last updated on August 7, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.