DR. DIANA DICKSON-WITMER M.D.
NPI 1932189131
Specialist in Wilmington, DE

Q: What is Diana Dickson-witmer's NPI number?

The NPI number for Diana Dickson-witmer is 1932189131. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Q: What is Diana Dickson-witmer's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Active since January 23, 2006PECOS EnrolledAccepts Medicare Assignment

1504 N BROOM ST, SUITE 2, WILMINGTON, DE 19806(302) 656-1882(302) 656-1883 Get Directions Write a Review

NPPES record last updated: November 29, 2017. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About Dr. Diana Dickson-witmer M.d. NPPES

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

DR. DIANA DICKSON-WITMER M.D. (NPI 1932189131) is an individual specialist in Wilmington, Delaware, licensed in Delaware (C1-0002159) and active in the NPI registry since January 2006. She is enrolled in Medicare PECOS, is affiliated with Atlantic General Hospital, and is a graduate of University Of Florida College Of Medicine (1976).

NPPES Registry Identity

NPI1932189131

Entity TypeIndividualFemale

Primary Taxonomy174400000X

Provider Legal NameDR. DIANA DICKSON-WITMERCredential: M.D.

Location Address1504 N BROOM ST, SUITE 2Wilmington, DE 19806-3087

Mailing Address4735 Ogletown Stanton RdNewark, DE 19713-2072 · (302) 656-1882 · Fax (302) 656-1883

Phone(302) 656-1882

Fax(302) 656-1883

Sole ProprietorNo

Medical School CMSUniversity Of Florida College Of MedicineGraduated 1976

Enumeration DateJanuary 23, 2006

Last NPPES UpdateNovember 29, 2017

✔ NPI 1932189131 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in DE · C1-0002159

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

1504 N BROOM ST, Wilmington, DE 19806

Open in Google Maps ↗

Other Identifiers 1

Other020013197DE · Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health 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. Diana Dickson-witmer 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 ID2769556919

PECOS Enrollment IDI20080806000083

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 Diana Dickson-witmer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Christiana Care Health Services Inc

0.6 mi

Addiction Medicine

501 W 14TH ST STE 1E40
Wilmington, DE 19801

Reassigned Medicare billing, Delaware enrollment
1,531 clinicians in this Medicare group

NPI 1043853120 (302) 320-2100

Beebe Physician Network, Inc.

72 mi

Internal Medicine

1515 SAVANNAH RD
Lewes, DE 19958

Reassigned Medicare billing, Delaware enrollment
382 clinicians in this Medicare group

NPI 1730133992 (302) 313-2300

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 12

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

258 services222 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.

111 services108 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.

80 services80 patients

Partial removal of breast 19301

A partial removal of the breast, also known as a lumpectomy, involves taking out a portion of the breast tissue to eliminate concerning cells. It's typically performed when the problem area is limited in size. This procedure helps to preserve most of the breast's appearance while aiming to remove all the unhealthy cells.

45 services43 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.

41 services38 patients

Ultrasonic guidance during surgery 76998

Ultrasonic guidance during surgery is a technique that uses sound waves to create real-time images of the inside of your body. This helps the surgeon navigate and perform procedures more accurately, reducing the risk of complications. It's like a GPS for your body's internal structures.

33 services33 patients

Biopsy of breast and placement of locating device using ultrasound, first growth 19083

A breast biopsy with locating device placement involves taking a small sample from an unusual growth, using ultrasound for precise targeting. This sample is studied for any abnormal cells. A locating device is also placed to mark the area for future reference.

32 services32 patients

Biopsy of breast and placement of locating device using x-ray with needle, first growth 19081

A biopsy of the breast involves extracting a small sample of tissue for examination. A locating device placement, guided by x-ray, aids in identifying the exact spot of the first growth. A needle is used in both processes to ensure precision and minimal discomfort.

30 services30 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

22 services22 patients

Biopsy or removal of deep lymph nodes of underarm 38525

A biopsy or removal of deep underarm lymph nodes is a procedure where a small sample of lymph node tissue is taken for testing. This helps in diagnosing or ruling out conditions like infections or cancers. It involves a small incision and is typically done under local or general anesthesia.

19 services19 patients

Imaging of lymph nodes during surgery 38900

Imaging of lymph nodes during surgery involves taking detailed pictures of your lymph nodes to help surgeons see and assess them in real-time. This procedure can aid in detecting disease, guiding treatment, and improving surgical precision.

17 services17 patients

Injection of radioactive material for x-ray identification of lymph node 38792

This procedure involves injecting a safe radioactive substance into your body. It travels to your lymph nodes, making them visible on X-ray images. This helps in identifying any abnormal nodes for further examination. It's a standard part of many diagnostic processes.

15 services15 patients

Hospital Affiliations CMS Care Compare

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

Atlantic General Hospital

Acute Care Hospitals · Berlin, MD

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210061

Location9733 Healthway DriveBerlin, MD 21811 · Worcester County

Emergency services

Other Providers at the Same Location NPPES 2

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

DR. DENNIS MICHAEL YOUNG M.D.

Psychiatry & Neurology (Psychiatry)

1504 N BROOM ST
WILMINGTON, DE 19806

New Castle County (302) 655-5784

DICKSON WITMER ASSOCIATES

Surgery

1504 N BROOM ST, SUITE 2
WILMINGTON, DE 19806

New Castle County (302) 656-1882

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 Diana Dickson-witmer's NPI number?

The NPI number for Diana Dickson-witmer is 1932189131. It was assigned to this individual provider in the NPPES registry on January 23, 2006.

Where is Diana Dickson-witmer located?

Diana Dickson-witmer practices at 1504 N Broom St Suite 2, Wilmington, DE 19806. The listed phone number is (302) 656-1882.

What is Diana Dickson-witmer's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Diana Dickson-witmer enrolled in Medicare?

Yes. Diana Dickson-witmer 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 Diana Dickson-witmer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Dickson-witmer reassigns Medicare benefits to 2 organizations: Christiana Care Health Services Inc (Wilmington, DE) and Beebe Physician Network, Inc. (Lewes, DE). 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 Diana Dickson-witmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Diana Dickson-witmer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and AmeriHealth Caritas Next list Diana Dickson-witmer 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 Diana Dickson-witmer affiliated with any hospitals?

According to CMS data, Diana Dickson-witmer is affiliated with Atlantic General Hospital.

When was this NPI record last updated?

The NPPES record for Diana Dickson-witmer was last updated on November 29, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.