DR. HILARIE CLAIRE TOMASIEWICZ M.D./PH.D.
NPI 1841557444
Neurological Surgery in Marietta, GA

Q: What is Hilarie Tomasiewicz's NPI number?

The NPI number for Hilarie Tomasiewicz is 1841557444. It was assigned to this individual provider in the NPPES registry on April 19, 2012.

Q: What is Hilarie Tomasiewicz's specialty?

The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.

Active since April 19, 2012PECOS EnrolledAccepts Medicare Assignment

61 WHITCHER ST NE STE 3110, MARIETTA, GA 30060(770) 422-2326(770) 422-7231 Get Directions Write a Review

NPPES record last updated: July 11, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jul 11, 2023, Jan 22, 2021, Jan 12, 2021 and 1 more (4 updates tracked since 2019).

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About Dr. Hilarie Claire Tomasiewicz M.d./ph.d. NPPES

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

DR. HILARIE CLAIRE TOMASIEWICZ M.D./PH.D. (NPI 1841557444) is an individual neurological surgery provider in Marietta, Georgia, licensed in Georgia (82673) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, is affiliated with Wellstar Kennestone Regional Medical Center, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1841557444

Entity TypeIndividualFemale

Primary Taxonomy207T00000X

Provider Legal NameDR. HILARIE CLAIRE TOMASIEWICZCredential: M.D./PH.D.

Location Address61 WHITCHER ST NE STE 3110Marietta, GA 30060-1179

Mailing Address61 Whitcher St Ne Ste 3110Marietta, GA 30060-1179 · (770) 422-2326 · Fax (770) 422-7231

Phone(770) 422-2326

Fax(770) 422-7231

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateApril 19, 2012

Last NPPES UpdateJuly 11, 20234 updates tracked since enumeration

NPPES CertifiedJuly 11, 2023

✔ NPI 1841557444 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207T00000X

Licenses✔ Licensed in GA · 82673✔ Licensed in NY · 306979

Definition

A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

61 WHITCHER ST NE STE 3110, Marietta, GA 30060

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Secondary Practice Locations 3

Location 1525 E 68th St, Box 99New York, NY 10065-4870 · Phone (866) 426-7787

Location 21365 Clifton Rd NEAtlanta, GA 30322-4870 · Phone (617) 256-4176

Location 31 Gustave L Levy PlNew York, NY 10029-6504 · Phone (212) 241-2479

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter Health, Oscar Health.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. Hilarie Claire Tomasiewicz M.d./ph.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 ID1153668140

PECOS Enrollment IDI20190625003792

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 Hilarie Tomasiewicz reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Wellstar Medical Group, LLC

Same address

Neurological Surgery

61 WHITCHER ST NE, SUITE 3110
Marietta, GA 30060

Reassigned Medicare billing, Georgia enrollment
3,885 clinicians in this Medicare group

NPI 1760775738 (770) 422-2326

Icahn School Of Medicine At Mount Sinai

748 mi

Neurological Surgery

5 E 98TH ST FL 7
New York, NY 10029

Reassigned Medicare billing, New York enrollment
79 clinicians in this Medicare group

NPI 1497029581 (212) 241-0002

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 3

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.

36 services21 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.

35 services35 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.

16 services14 patients

Hospital Affiliations CMS Care Compare 5

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

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 Paulding Medical Center

Acute Care Hospitals · Hiram, GA

4/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number110042

Location2518 Jimmy Lee Smith ParkwayHiram, GA 30141 · Paulding County

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

Wellstar Douglas Medical Center

Acute Care Hospitals · Douglasville, GA

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number110184

Location8954 Hospital DriveDouglasville, GA 30134 · Douglas County

Emergency services Birthing friendly

Wellstar North Fulton Hospital

Acute Care Hospitals · Roswell, GA

2/5 CMS rating

OwnershipProprietary

CMS Certification Number110198

Location3000 Hospital BoulevardRoswell, GA 30076 · Fulton County

Emergency services 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

$130.64 typical visit price

range $56.84 – $172.43

Typical copayment $32.66 (range $14.21 – $43.10)

Most-billed visit code 99204

Established Patient

$70.85 typical visit price

range $18.22 – $140.40

Typical copayment $17.71 (range $4.55 – $35.10)

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 20

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

AMANDA MICHELLE OUTLY PA

Physician Assistant