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DR. SHERIF H. TEWFIK MD
NPI 1588640460
Anesthesiology in Ames, IA

Active since December 21, 2005PECOS EnrolledAccepts Medicare Assignment
1111 DUFF AVENUE, AMES, IA 50010(515) 239-2182(515) 239-3665 Get Directions Write a Review

NPPES record last updated: July 20, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Sherif H. Tewfik Md NPPES

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

DR. SHERIF H. TEWFIK MD (NPI 1588640460) is an individual anesthesiology provider in Ames, Iowa, licensed in Iowa (34467) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Allen Hospital, and maintains a secondary practice location in Denver.

NPPES Registry Identity

NPI1588640460
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameDR. SHERIF H. TEWFIKCredential: MD
Location Address1111 DUFF AVENUEAmes, IA 50010-3014
Mailing Address1111 Duff AvenueAmes, IA 50010-3014 · (515) 239-2182 · Fax (515) 239-3665
Phone(515) 239-2182
Fax(515) 239-3665
Sole ProprietorNo
Medical School CMSOtherGraduated 1995
Enumeration DateDecember 21, 2005
Last NPPES UpdateJuly 20, 2023
NPPES CertifiedJuly 20, 2023
✔ NPI 1588640460 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in IA · 34467✔ Licensed in CO · DR.0069589
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.
1111 DUFF AVENUE, Ames, IA 50010
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Secondary Practice Location 1

Location 110350 E Dakota AveDenver, CO 80247-1314 · Phone (303) 338-4545

Other Identifiers 6

Other34467IA · Tricare Provider #
Medicaid0267294IA
Other237155IA · Midlands Provider #
OtherIA0185IA · John Deere Provider #
Other55714IA · Blue Shield Provider #
Other050087549IA · Railroad Medicare #

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health, Oscar Health Maintenance Organization of Florida, Oscar Insurance Company 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. Sherif H. Tewfik Md 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 ID7315070927
PECOS Enrollment IDI20100803001000, I20170706001653
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

6

Medicare enrollment records show Sherif Tewfik reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Iowa Physicians Clinic Medical Foundation
27 mi
General Practice
8101 BIRCHWOOD CT, SUITE N
Johnston, IA 50131
  • Reassigned Medicare billing, Iowa enrollment
  • 1,506 clinicians in this Medicare group
NPI 1891127502 (515) 471-9300
Anesthesia Physician Solutions Of North Florida, LLC
870 mi
Anesthesiology
8383 N DAVIS HWY
Pensacola, FL 32514
  • Reassigned Medicare billing, Florida enrollment
  • 528 clinicians in this Medicare group
NPI 1831605617 (954) 939-5000
Ams Anesthetist Services LLC
877 mi
Anesthesiology
28 N PALAFOX ST
Pensacola, FL 32502
  • Reassigned Medicare billing, Florida enrollment
  • 270 clinicians in this Medicare group
NPI 1770834426 (866) 653-2540
Ams Of Crestview LLC
877 mi
Anesthesiology
28 N PALAFOX ST
Pensacola, FL 32502
  • Reassigned Medicare billing, Florida enrollment
  • 38 clinicians in this Medicare group
NPI 1588927982 (866) 653-2540
Tallahassee Memorial Healthcare Inc
897 mi
Cardiovascular Disease
877 3RD ST STE 3
Chipley, FL 32428
  • Reassigned Medicare billing, Florida enrollment
  • 654 clinicians in this Medicare group
NPI 1679199236 (850) 216-0100
Atlantic Coast Anesthesia Services P.C.
987 mi
Anesthesiology
809 82ND PKWY
Myrtle Beach, SC 29572
  • Reassigned Medicare billing, South Carolina enrollment
  • Medicare enrollment name: Atlantic Coast Anesthesia Services PC
  • 258 clinicians in this Medicare group
NPI 1932641313 (843) 692-1000

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

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.

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.
13 services13 patients

Hospital Affiliations CMS Care Compare

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

Allen Hospital

Acute Care Hospitals · Waterloo, IA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160110
Location1825 Logan AvenueWaterloo, IA 50703 · Black Hawk County
Emergency services Birthing friendly

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.

Reported Quality Measures

Post-Anesthetic Transfer of Care Measure: Procedure Room to a Post Anesthesia Care Unit (PACU)
Percentage of patients, regardless of age, who are under the care of an anesthesia practitioner and are admitted to a PACU or other non-ICU location in which a post-anesthetic formal transfer of care protocol or checklist which includes the key transfer of…
33%642 patients2/55-star benchmark: 100%
Post-Anesthetic Transfer of Care: Use of Checklist or Protocol for Direct Transfer of Care from Procedure Room to Intensive Care Unit (ICU)
Percentage of patients, regardless of age, who undergo a procedure under anesthesia and are admitted to an Intensive Care Unit (ICU) directly from the anesthetizing location, who have a documented use of a checklist or protocol for the transfer of care from…
43%21 patients
Pre-operative OSA assessment
Percentage of patients who undergo a surgical procedure in the operating room/procedure room that have a pre-operative assessment for Obstructive Sleep Apnea (OSA)
100%48 patients5/55-star benchmark: 100%
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 15

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

DR. LAURA ELIZABETH HUFFORD MD
Hospitalist
1111 DUFF AVENUE, MCFARLAND CLINIC PC
AMES, IA 50010
Story County (916) 734-0428
DR. ELI D MUSSELMAN M.D.
Anesthesiology
1111 DUFF AVENUE
AMES, IA 50010
Story County (515) 239-2151
JOHN GEORGE HARDIE MD
Radiology (Radiation Oncology)
1111 DUFF AVENUE
AMES, IA 50010
Story County (515) 239-2411
DR. MATTHEW RYAN OKLAND DO
Anesthesiology
1111 DUFF AVENUE, MCFARLAND CLINIC PC
AMES, IA 50010
Story County (515) 239-2182
DR. VENKATESH K. RUDRAPATNA M.D.
Internal Medicine (Hematology & Oncology)
1111 DUFF AVENUE
AMES, IA 50010
Story County (515) 239-4401
DR. JOSHUA PAUL MCCAUGHEY DO
Emergency Medicine
1111 DUFF AVENUE, MCFARLAND CLINIC PC
AMES, IA 50010
Story County (515) 239-2155
JASON THOMAS RASMUSSEN MD
Internal Medicine (Cardiovascular Disease)
1111 DUFF AVENUE
AMES, IA 50010
Story County (515) 239-4472
STEPHANIE ANN DONNELLY DO
Anesthesiology
1111 DUFF AVENUE, MCFARLAND CLINIC, PC
AMES, IA 50010
Story County (515) 239-2182

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 Sherif Tewfik's NPI number?

The NPI number for Sherif Tewfik is 1588640460. It was assigned to this individual provider in the NPPES registry on December 21, 2005.

Where is Sherif Tewfik located?

Sherif Tewfik practices at 1111 Duff Avenue, Ames, IA 50010. The listed phone number is (515) 239-2182.

What is Sherif Tewfik's specialty?

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

Is Sherif Tewfik enrolled in Medicare?

Yes. Sherif Tewfik 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 organizations bill Medicare for Sherif Tewfik's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sherif Tewfik reassigns Medicare benefits to 6 organizations: Iowa Physicians Clinic Medical Foundation (Johnston, IA), Anesthesia Physician Solutions Of North Florida, LLC (Pensacola, FL), Ams Anesthetist Services LLC (Pensacola, FL), Ams Of Crestview LLC (Pensacola, FL), Tallahassee Memorial Healthcare Inc (Chipley, FL) and 1 more organization, listed in the Medicare section above. Each 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 Sherif Tewfik's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sherif Tewfik accept?

Health plans from Oscar Health, Oscar Health Maintenance Organization of Florida, Oscar Insurance Company and Wellmark Health Plan of Iowa, Inc. list Sherif Tewfik 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 Sherif Tewfik affiliated with any hospitals?

According to CMS data, Sherif Tewfik is affiliated with Allen Hospital.

When was this NPI record last updated?

The NPPES record for Sherif Tewfik was last updated on July 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.