AMMAR MAHMOUD M.D
NPI 1235578485
Anesthesiology - Pain Medicine in De Pere, WI

Q: What is Ammar Mahmoud's NPI number?

The NPI number for Ammar Mahmoud is 1235578485. It was assigned to this individual provider in the NPPES registry on June 20, 2013.

Q: What is Ammar Mahmoud's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

Q: When was this NPI record last updated?

The NPPES record for Ammar Mahmoud was last updated on December 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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, 2013PECOS EnrolledAccepts Medicare Assignment

1716 LAWRENCE DR STE 103, DE PERE, WI 54115(920) 632-6800(920) 632-6806 Get Directions Write a Review

NPPES record last updated: December 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 11, 2025, Nov 25, 2025, Nov 10, 2025 and 3 more (6 updates tracked since 2018).

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About Ammar Mahmoud M.d NPPES

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

AMMAR MAHMOUD M.D (NPI 1235578485) is an individual pain medicine provider in De Pere, Wisconsin, licensed in Maine (MD21879) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with St Joseph Hospital, and maintains 12 additional practice locations.

NPPES Registry Identity

NPI1235578485

Entity TypeIndividualMale

Primary Taxonomy207LP2900X

Provider Legal NameAMMAR MAHMOUDCredential: M.D

Location Address1716 LAWRENCE DR STE 103De Pere, WI 54115-9108

Mailing Address1716 Lawrence Dr Ste 103De Pere, WI 54115-9108 · (920) 632-6800 · Fax (920) 632-6806

Phone(920) 632-6800

Fax(920) 632-6806

Sole ProprietorNo

Medical School CMSOtherGraduated 2012

Enumeration DateJune 20, 2013

Last NPPES UpdateDecember 11, 20256 updates tracked since enumeration

NPPES CertifiedDecember 11, 2025

✔ NPI 1235578485 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207LP2900X

Licenses✔ Licensed in ME · MD21879✔ Licensed in WI · 85747-20

Definition

An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.

Also ListedAnesthesiologyTaxonomy 207L00000X · License 125063751 (IL)

1716 LAWRENCE DR STE 103, De Pere, WI 54115

Open in Google Maps ↗

Secondary Practice Locations 12

Location 1501 Doctors CtOshkosh, WI 54901-2025 · Phone (920) 276-8600 · Fax (920) 632-6806

Location 22700 W 9th Ave Ste 305Oshkosh, WI 54904-7865 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 31501 S Madison StAppleton, WI 54915-1846 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 4498 Essex St Ste 102Bangor, ME 04401-3990 · Phone (207) 830-2739 · Fax (888) 355-6416

Location 5360 BroadwayBangor, ME 04401-3900 · Phone (207) 830-2739 · Fax (888) 355-6416

Location 61506 S Oneida StAppleton, WI 54915-1305 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 71540 Lyon DrNeenah, WI 54956-5035 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 8614 Memorial DrChilton, WI 53014-1568 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 9925 Union St Ste 2Bangor, ME 04401-3051 · Phone (207) 830-2739 · Fax (888) 355-6416

Location 10451 E Brooklyn St Ste 1Chilton, WI 53014-1595 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 112130 S Washburn StOshkosh, WI 54904-8949 · Phone (920) 632-6800 · Fax (920) 632-6806

Location 12500 S Oakwood RdOshkosh, WI 54904-7944 · Phone (920) 632-6800 · Fax (920) 632-6806

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Network Health, UnitedHealthcare.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

Ammar Mahmoud 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 ID1254689318

PECOS Enrollment IDI20180806001974, I20241224000189, I20250827003523

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 Ammar Mahmoud reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Alleviate Pain And Spine, Sc

Same address

Pain Medicine

1716 LAWRENCE DR STE 103
De Pere, WI 54115

Reassigned Medicare billing, Wisconsin enrollment
7 clinicians in this Medicare group

NPI 1962217521 (920) 632-6800

Vital Anesthesia Associates Sc

26 mi

Anesthesiology

1540 LYON DR STE 2
Neenah, WI 54956

Reassigned Medicare billing, Wisconsin enrollment
4 clinicians in this Medicare group

NPI 1578422275 (862) 668-8888

St. Joseph Hospital

952 mi

General Acute Care Hospital

360 BROADWAY
Bangor, ME 04401

Reassigned Medicare billing, Maine enrollment
259 clinicians in this Medicare group

NPI 1154321545 (207) 907-1000

Apex Interventional Pain Specialists PC

952 mi

Pain Medicine

498 ESSEX ST STE 102
Bangor, ME 04401

Reassigned Medicare billing, Maine enrollment
3 clinicians in this Medicare group

NPI 1306639232 (207) 830-2739

Eastern Maine Medical Center

953 mi

General Acute Care Hospital

489 STATE ST
Bangor, ME 04401

Reassigned Medicare billing, Maine enrollment
788 clinicians in this Medicare group

NPI 1790789147 (207) 973-7000

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 18

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.

Injection of substance into lower spine canal using imaging guidance 62323

This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.

102 services83 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.

78 services78 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.

75 services67 patients

Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes 99152

This procedure involves a doctor administering a medication to reduce your consciousness during a procedure. This helps in managing discomfort and anxiety. The initial application lasts for 15 minutes and is for individuals aged 5 years or older.

61 services50 patients

Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance 27096

This procedure involves injecting medicine into the joint where your lower spine meets your hip bone. Using special imaging technology, the doctor ensures the medicine is delivered accurately. This can help reduce pain and inflammation in that area.

56 services53 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.

51 services50 patients

Injection of lower or sacral spine facet joint using imaging guidance, single level 64493

This procedure involves injecting medication into the facet joint in your lower back or sacral spine. It's done under imaging guidance to ensure accuracy. The aim is to alleviate pain and inflammation. It's a safe, often effective method for managing spinal discomfort.

49 services32 patients

Injection of lower or sacral spine facet joint using imaging guidance, second level 64494

This procedure involves injecting medication into the facet joints of your lower or sacral spine to manage pain. Imaging guidance ensures accurate placement. It's the second level, meaning it's done on two different joint levels.

46 services29 patients

Aspiration and/or injection of fluid from large joint 20610

This procedure involves using a needle to remove (aspiration) or introduce (injection) fluid into a large joint like the knee or hip. It can help diagnose conditions, relieve discomfort, or deliver medication directly to the joint.

31 services22 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.

31 services31 patients

Ultrasonic guidance for needle placement 76942

Ultrasonic guidance for needle placement is a technique where sound waves create images that help accurately position the needle during procedures. This method ensures precision, minimizes discomfort, and increases safety.

27 services23 patients

Fluoroscopic guidance for needle placement 77002

Fluoroscopic guidance for needle placement is a medical procedure that uses a special X-ray technology to help accurately place a needle in the body. It's often used in biopsies, injections or other treatments to ensure precision and safety.

26 services19 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint 64635

This procedure involves using imaging guidance to accurately target and destroy nerves in the lower or sacral spinal facet joint. It's done to relieve chronic back pain. The process is safe and usually effective.

22 services16 patients

Destruction of lower or sacral spinal facet joint nerves using imaging guidance, each additional facet joint 64636

This procedure involves using imaging technology to locate and treat nerves in your lower spine or sacral area that may be causing pain. Each additional facet joint refers to treating more than one spinal nerve. It's a non-invasive way to manage chronic back pain.

21 services15 patients

Injection of upper or middle spine facet joint using imaging guidance, single level 64490

This procedure involves injecting medication into a joint in your upper or middle spine. It's performed under imaging guidance for precision. The aim is to reduce inflammation and pain. It's a single-level process, meaning one joint is treated at a time.

18 services12 patients

Injection of upper or middle spine facet joint using imaging guidance, second level 64491

This procedure involves injecting medication into the upper or middle spine facet joint, a small joint in your back. This is done under imaging guidance for precision. It's a second-level procedure, meaning it's done on two separate joints. It can help reduce pain and inflammation.

17 services12 patients

Injection of trigger points, 3 or more muscles 20553

Trigger point injection therapy involves injecting medication into specific areas of your muscles, known as trigger points. These are areas that produce pain and discomfort. If you have three or more muscles affected, each will be treated individually.

12 services11 patients

Insertion or replacement of spinal neurostimulator generator or receiver 63685

The insertion of a spinal neurostimulator generator or receiver is a procedure to manage chronic pain. A small device is implanted under your skin, which sends mild electrical signals to your spinal cord. These signals disrupt pain signals, helping to reduce discomfort.

11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

St Joseph Hospital

Acute Care Hospitals · Bangor, ME

4/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number200001

Location360 BroadwayBangor, ME 04401 · Penobscot County

Emergency services

Ascension NE Wisconsin - St Elizabeth Campus

Acute Care Hospitals · Appleton, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520009

Location1506 S Oneida StAppleton, WI 54915 · Outagamie County

Emergency services Birthing friendly

Other Providers at the Same Location NPPES 8

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

LENA DIMATTEO APNP

Nurse Practitioner