TIMOTHY WITHAM M.D.
NPI 1841236825
Neurological Surgery in Chicago, IL

Q: What is Timothy Witham's NPI number?

The NPI number for Timothy Witham is 1841236825. It was assigned to this individual provider in the NPPES registry on June 20, 2006.

Q: What is Timothy Witham's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Timothy Witham was last updated on April 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 20, 2006PECOS EnrolledAccepts Medicare Assignment

5841 S MARYLAND AVE, CHICAGO, IL 60637(888) 824-0200 Get Directions Write a Review

NPPES record last updated: April 10, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

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About Timothy Witham M.d. NPPES

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

TIMOTHY WITHAM M.D. (NPI 1841236825) is an individual neurological surgery provider in Chicago, Illinois, licensed in Illinois (036178633) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with The University Of Chicago Medical Center, and maintains a secondary practice location in Baltimore.

NPPES Registry Identity

NPI1841236825

Entity TypeIndividualMale

Primary Taxonomy207T00000X

Provider Legal NameTIMOTHY WITHAMCredential: M.D.

Location Address5841 S MARYLAND AVEChicago, IL 60637-1443

Mailing Address150 Harvester Dr Ste 300Burr Ridge, IL 60527-5965

Phone(888) 824-0200

Sole ProprietorNo

Medical School CMSJohns Hopkins University School Of MedicineGraduated 1994

Enumeration DateJune 20, 2006

Last NPPES UpdateApril 10, 2026

NPPES CertifiedApril 10, 2026

✔ NPI 1841236825 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNeurological SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207T00000X

Licenses✔ Licensed in IL · 036178633✔ Licensed in MD · D61713

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.

5841 S MARYLAND AVE, Chicago, IL 60637

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Secondary Practice Location 1

Location 1600 N Wolfe StBaltimore, MD 21287-0005 · Phone (410) 955-6406

Other Identifiers 1

Medicaid407572200MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Timothy Witham 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 ID345285631

PECOS Enrollment IDI20260416001568

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.

Areas of Expertise CMS Part B claims 16

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.

Fusion of additional segment of spine 22614

Fusion of an additional segment of the spine is a surgical procedure to join two or more vertebrae together. This is done to stabilize the spine and reduce pain or correct a deformity. The procedure involves using bone grafts, rods, or screws to secure the spine.

95 services33 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.

89 services75 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.

71 services71 patients

Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment 63048

This procedure involves the partial removal of a bone in your spine to alleviate pressure on your spinal cord or nerves. It may be performed on multiple spine segments depending on your condition. The aim is to improve mobility and reduce pain or discomfort.

51 services22 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

50 services50 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

38 services36 patients

Placement of stabilizing device to back, 3-6 spine bone segments 22842

This procedure involves placing a device on your back to stabilize 3-6 spine bone segments. It aids in maintaining spine alignment and reducing pain. The device is secured to the bones, providing support and promoting healing.

35 services34 patients

Insertion of cage or mesh device to spine bone and disc space during spine fusion 22853

Spine fusion is a procedure to join two or more vertebrae. During this process, a cage or mesh device is inserted into the spine bone and disc space. This helps to stabilize the spine, reduce pain, and improve functionality. The device acts as a bridge for new bone to grow on.

23 services20 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 services22 patients

Computer-assisted spinal procedure 61783

A computer-assisted spinal procedure is a surgical technique that uses computer technology for improved precision. It involves creating a 3D image of your spine to guide the surgeon during the operation. This method enhances accuracy, reduces risk, and promotes quicker recovery.

19 services19 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

19 services19 patients

Incision or removal of lower spine bone segment 22214

This procedure involves making a small incision in the lower back to access the spine. A segment of bone may be removed to relieve pressure on nerves, improve mobility, or treat conditions like herniated discs or spinal stenosis. Recovery varies, but physical therapy may follow.

16 services16 patients

Fusion of spine in lower back with partial removal of spine bone and disc 22633

This procedure, called lumbar spinal fusion, involves joining two or more vertebrae in your lower back. It includes a partial removal of a spine bone and disc to alleviate pain and improve stability. The goal is to reduce motion between vertebrae and prevent nerve irritation.

16 services16 patients

Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment 63047

This procedure involves removing part of a spine bone to alleviate pressure on the lower spinal cord and/or nerves. It targets a single segment of the spine, improving mobility and reducing pain. It's a common treatment for conditions like herniated discs or spinal stenosis.

15 services14 patients

Fusion of spine in neck by posterior approach 22600

Fusion of the spine in the neck by a posterior approach is a surgery to stabilize the neck. It involves connecting two or more vertebrae in the neck from the back side. This can reduce pain and improve stability by limiting movement of the neck.

13 services13 patients

Partial removal of spine bone with release of upper spinal cord and/or nerves, 1 segment 63045

This procedure involves removing a part of your spine bone to alleviate pressure on the upper spinal cord or nerves. It's performed on one segment of the spine to improve nerve function and reduce pain.

12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

The University Of Chicago Medical Center

Acute Care Hospitals · Chicago, IL

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number140088

Location5841 South MarylandChicago, IL 60637 · Cook County

Emergency services Birthing friendly

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210009

Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County

Emergency services Birthing friendly

Johns Hopkins Bayview Medical Center

Acute Care Hospitals · Baltimore, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210029

Location4940 Eastern AvenueBaltimore, MD 21224 · Baltimore City County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60637 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

$138.86 typical visit price

range $60.08 – $183.39

Typical copayment $34.71 (range $15.02 – $45.84)

Most-billed visit code 99204

Established Patient

$74.80 typical visit price

range $18.97 – $148.12

Typical copayment $18.70 (range $4.74 – $37.03)

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.

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