1. Home
  2. Directory
  3. Pennsylvania
  4. Philadelphia
  5. Psychiatry Neurology
  6. NPI Profile

DR. LAUREN HART HAMMER MD
NPI 1174918122
Psychiatry & Neurology - Neurology in Philadelphia, PA

Active since April 06, 2015PECOS EnrolledAccepts Medicare Assignment
74.46/100
CMS Quality Rating
330 SOUTH NINTH STREET, PHILADELPHIA, PA 19107(215) 662-3606(215) 829-6606 Get Directions Write a Review

NPPES record last updated: July 11, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 11, 2025, Mar 4, 2021, Jul 10, 2020 and 5 more (8 updates tracked since 2016).

About Dr. Lauren Hart Hammer Md NPPES

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

DR. LAUREN HART HAMMER MD (NPI 1174918122) is an individual neurology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD483283) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1174918122
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameDR. LAUREN HART HAMMERCredential: MD
Location Address330 SOUTH NINTH STREETPhiladelphia, PA 19107-6103
Mailing Address330 South Ninth StreetPhiladelphia, PA 19107-6103 · (215) 662-3606 · Fax (215) 829-6606
Phone(215) 662-3606
Fax(215) 829-6606
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2016
Enumeration DateApril 6, 2015
Last NPPES UpdateJuly 11, 20258 updates tracked since enumeration
NPPES CertifiedJuly 11, 2025
✔ NPI 1174918122 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
Licenses✔ Licensed in PA · MD483283✔ Licensed in MA · 270871✔ Licensed in CA · 167920
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
330 SOUTH NINTH STREET, Philadelphia, PA 19107
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11635 Divisadero St Ste 520San Francisco, CA 94115 · Phone (415) 353-2311 · Fax (415) 353-9060
Location 24150 Clement StSan Francisco, CA 94121 · Phone (415) 379-5530 · Fax (415) 750-6662

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter Health, Ambetter Health of Delaware.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. Lauren Hart Hammer 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 ID2769771385
PECOS Enrollment IDI20240402003661
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 Lauren Hammer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

University Of Penn-Medical Group
0.1 mi
Ambulatory Fertility Facility
801 SPRUCE ST, 8TH FLOOR
Philadelphia, PA 19107
  • Reassigned Medicare billing, Pennsylvania enrollment
  • 3,488 clinicians in this Medicare group
NPI 1669860854 (215) 829-2345

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 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.
23 services19 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
20 services11 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.
15 services15 patients
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.
15 services13 patients

Hospital Affiliations CMS Care Compare 4

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

Hospital Of Univ Of Pennsylvania

Acute Care Hospitals · Philadelphia, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390111
Location34th & Spruce StsPhiladelphia, PA 19104 · Philadelphia County
Emergency services Birthing friendly

Chester County Hospital

Acute Care Hospitals · West Chester, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390179
Location701 East Marshall StreetWest Chester, PA 19380 · Chester County
Emergency services Birthing friendly

Penn Presbyterian Medical Center

Acute Care Hospitals · Philadelphia, PA
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number390223
Location51 North 39th StreetPhiladelphia, PA 19104 · Philadelphia County
Emergency services

Pennsylvania Hospital

Acute Care Hospitals · Philadelphia, PA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number390226
Location800 Spruce StreetPhiladelphia, PA 19107 · Philadelphia County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19107 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
$137.17 typical visit price
range $59.88 – $180.99
Typical copayment $34.29 (range $14.97 – $45.24)
Most-billed visit code 99204
Established Patient
$105.21 typical visit price
range $19.30 – $147.29
Typical copayment $26.30 (range $4.82 – $36.82)
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.

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.

74.46/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability76
Improvement Activities40
Cost46.68

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.

CHARLES PANKOW JR. CRNP
Nurse Practitioner
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
REBECCA WILLIAMSON MD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
CHARLES FRANCIS PALMER III MD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
DR. HOLLY CONSTANCE ELSER MD, PHD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
MOIRA ENGLAND FLANIGAN MD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET, APT. 327
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
STEPHEN D ARADI MD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
DR. PATRICK THOMAS EBBERT MD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606
LINDSAY AGOSTINELLI MD, PHD
Psychiatry & Neurology (Neurology)
330 SOUTH NINTH STREET
PHILADELPHIA, PA 19107
Philadelphia County (215) 662-3606

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 Lauren Hammer's NPI number?

The NPI number for Lauren Hammer is 1174918122. It was assigned to this individual provider in the NPPES registry on April 6, 2015.

Where is Lauren Hammer located?

Lauren Hammer practices at 330 South Ninth Street, Philadelphia, PA 19107. The listed phone number is (215) 662-3606.

What is Lauren Hammer's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Lauren Hammer enrolled in Medicare?

Yes. Lauren Hammer 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 organization bills Medicare for Lauren Hammer's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lauren Hammer reassigns Medicare benefits to University Of Penn-Medical Group (Philadelphia, PA). The 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 Lauren Hammer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lauren Hammer accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Lauren Hammer 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 Lauren Hammer affiliated with any hospitals?

According to CMS data, Lauren Hammer is affiliated with Hospital Of Univ Of Pennsylvania, Chester County Hospital, Penn Presbyterian Medical Center and Pennsylvania Hospital.

When was this NPI record last updated?

The NPPES record for Lauren Hammer was last updated on July 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.