DR. DAPHNE GELLERSON M.D.
NPI 1669834107
Internal Medicine in Washington, DC

Q: What is Daphne Gellerson's NPI number?

The NPI number for Daphne Gellerson is 1669834107. It was assigned to this individual provider in the NPPES registry on March 23, 2016.

Q: What is Daphne Gellerson's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Daphne Gellerson was last updated on September 29, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since March 23, 2016PECOS EnrolledAccepts Medicare Assignment

1501 M ST NW STE 450, WASHINGTON, DC 20005(202) 204-7092 Get Directions Write a Review

NPPES record last updated: September 29, 2021. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 29, 2021, Aug 20, 2021, Jul 10, 2019 and 1 more (4 updates tracked since 2016).

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About Dr. Daphne Gellerson M.d. NPPES

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

DR. DAPHNE GELLERSON M.D. (NPI 1669834107) is an individual internal medicine provider in Washington, District Of Columbia, licensed in California (A162118) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of University Of Maryland School Of Medicine (2016).

NPPES Registry Identity

NPI1669834107

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDR. DAPHNE GELLERSONCredential: M.D.

Location Address1501 M ST NW STE 450Washington, DC 20005-1726

Mailing Address1 Embarcadero Ctr Ste 1900San Francisco, CA 94111-3723 · (415) 658-6791

Phone(202) 204-7092

Sole ProprietorNo

Medical School CMSUniversity Of Maryland School Of MedicineGraduated 2016

Enumeration DateMarch 23, 2016

Last NPPES UpdateSeptember 29, 20214 updates tracked since enumeration

NPPES CertifiedSeptember 29, 2021

✔ NPI 1669834107 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A162118

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1501 M ST NW STE 450, Washington, DC 20005

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Secondary Practice Locations 2

Location 122 S Greene St, Room N3E09Baltimore, MD 21201-1544 · Phone (410) 328-6110

Location 22410 California StSan Francisco, CA 94115-2681 · Phone (415) 529-4050

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. Daphne Gellerson 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 ID7214222520

PECOS Enrollment IDI20210928003262

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 Reassignment

Medicare enrollment records show Daphne Gellerson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

One Medstar Primary Care LLC

1.0 mi

Family Medicine

1001 G ST NW, STE 200 EAST
Washington, DC 20001

Reassigned Medicare billing, District of Columbia enrollment
162 clinicians in this Medicare group

NPI 1417571530 (202) 660-0005

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 4

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 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.

57 services35 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

38 services29 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.

14 services12 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20005 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

Most-billed visit code 99214

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 11

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

MR. JOHN MICHAEL CURTIN P.A.

Physician Assistant