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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

THEODORE N MARKS M.D.
NPI 1689638363
Anesthesiology in Cleveland, OH

Active since April 12, 2006PECOS Enrolled
9500 EUCLID AVE, CLEVELAND, OH 44195(800) 223-2273 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Theodore N Marks M.d. NPPES

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

THEODORE N MARKS M.D. (NPI 1689638363) is an individual anesthesiology provider in Cleveland, Ohio, licensed in Ohio (35076255M) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS, is affiliated with Cleveland Clinic, and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (1992).

NPPES Registry Identity

NPI1689638363
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameTHEODORE N MARKSCredential: M.D.
Location Address9500 EUCLID AVECleveland, OH 44195-0001
Mailing Address6000 W Creek Rd, Suite 10Independence, OH 44131-2139 · (216) 986-1256 · Fax (216) 986-1191
Phone(800) 223-2273
Sole ProprietorNo
Medical School CMSClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv UniversityGraduated 1992
Enumeration DateApril 12, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1689638363 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in OH · 35076255M
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
9500 EUCLID AVE, Cleveland, OH 44195
Open in Google Maps ↗

Other Identifiers 1

Medicaid2146127OH

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

Theodore N Marks 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 ID7810996592
PECOS Enrollment IDI20061206000257
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 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.

Anesthesia for other closed procedure on chest 00520
Anesthesia for a closed chest procedure involves the use of medications to block sensation, ensuring you don't feel pain during the procedure. It can be general (you're asleep) or regional (part of your body is numbed). This helps maintain comfort and safety.
16 services16 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
13 services13 patients
Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
11 services11 patients

Hospital Affiliations CMS Care Compare

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

Cleveland Clinic

Acute Care Hospitals · Cleveland, OH
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360180
Location9500 Euclid AvenueCleveland, OH 44195 · Cuyahoga County
Emergency services Birthing friendly

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.

MS. MARY COLLEEN RATH R.D., L.D., CNSC
Dietitian, Registered
9500 EUCLID AVE, M17
CLEVELAND, OH 44195
Cuyahoga County (216) 444-6986
DR. CHRISTOPHER F TENGGARDJAJA M.D.
Urology (Urogynecology and Reconstructive Pelvic Surgery)
9500 EUCLID AVE, Q10-1
CLEVELAND, OH 44195
Cuyahoga County (216) 444-5600
DR. MASATO FUJIKI M.D., PH.D.
Surgery
9500 EUCLID AVE
CLEVELAND, OH 44195
Cuyahoga County (216) 444-8007
KRISTIN R JOHNSON CNP
Nurse Practitioner
9500 EUCLID AVE
CLEVELAND, OH 44195
Cuyahoga County (800) 223-2273
MONICA LYNN SHEIN CRNA
Nurse Anesthetist, Certified Registered
9500 EUCLID AVE
CLEVELAND, OH 44195
Cuyahoga County (800) 223-2273
MRS. TONYA RENEE GOINGS ACNP-BC
Nurse Practitioner (Acute Care)
9500 EUCLID AVE, SUITE RC25
CLEVELAND, OH 44195
Cuyahoga County (216) 444-2200
MS. DANA ANNE RUBIS CNP
Nurse Practitioner (Critical Care Medicine)
9500 EUCLID AVE, G58
CLEVELAND, OH 44195
Cuyahoga County (216) 444-5086
DR. RACHAEL C SULLIVAN M.D.
Surgery
9500 EUCLID AVE
CLEVELAND, OH 44195
Cuyahoga County (440) 449-1101

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 Theodore Marks's NPI number?

The NPI number for Theodore Marks is 1689638363. It was assigned to this individual provider in the NPPES registry on April 12, 2006.

Where is Theodore Marks located?

Theodore Marks practices at 9500 Euclid Ave, Cleveland, OH 44195. The listed phone number is (800) 223-2273.

What is Theodore Marks's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Theodore Marks enrolled in Medicare?

Yes. Theodore Marks 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.

Is Theodore Marks affiliated with any hospitals?

According to CMS data, Theodore Marks is affiliated with Cleveland Clinic.

When was this NPI record last updated?

The NPPES record for Theodore Marks was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.