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DR. ERIN MARGARET OAKLEY M.D.
NPI 1245691146
Emergency Medicine in Boston, MA

Active since March 19, 2016PECOS EnrolledAccepts Medicare Assignment
243 CHARLES ST, BOSTON, MA 02114(617) 573-3431 Get Directions Write a Review

NPPES record last updated: August 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 11, 2025, Jun 20, 2016, Mar 19, 2016 (3 updates tracked since 2016).

About Dr. Erin Margaret Oakley M.d. NPPES

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

DR. ERIN MARGARET OAKLEY M.D. (NPI 1245691146) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (267502) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, is affiliated with Lawrence General Hospital, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1245691146
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. ERIN MARGARET OAKLEYCredential: M.D.
Location Address243 CHARLES STBoston, MA 02114-3002
Mailing Address243 Charles StBoston, MA 02114-3002 · (617) 573-3431
Phone(617) 573-3431
Sole ProprietorYes
Medical School CMSOtherGraduated 2016
Enumeration DateMarch 19, 2016
Last NPPES UpdateAugust 11, 20253 updates tracked since enumeration
NPPES CertifiedAugust 11, 2025
✔ NPI 1245691146 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MA · 267502
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
243 CHARLES ST, Boston, MA 02114
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Other Names 1

Former Name (1)Miss Erin Margaret Gallivan

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Erin Margaret Oakley 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 ID6002101565
PECOS Enrollment IDI20200819000688
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.

Areas of Expertise CMS Part B claims 3

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.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
63 services62 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
46 services46 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
33 services33 patients

Hospital Affiliations CMS Care Compare 2

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

Lawrence General Hospital

Acute Care Hospitals · Lawrence, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220010
LocationOne General StreetLawrence, MA 01842 · Essex County
Emergency services Birthing friendly

Massachusetts Eye And Ear Infirmary -

Acute Care Hospitals · Boston, MA
OwnershipVoluntary non-profit - Private
CMS Certification Number220075
Location243 Charles StreetBoston, MA 02114 · Suffolk County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

Other Providers at the Same Location NPPES 20

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

CARLA PETERSEN AU.D., CCC-A
Audiologist
243 CHARLES ST, AUDIOLOGY DEPARTMENT
BOSTON, MA 02114
Suffolk County (617) 573-3266
DR. RYAN CARLSON MD PHD
Student in an Organized Health Care Education/Training Program
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 523-7900
MASSACHUSETTS EYE AND EAR INFIRMARY
Eyewear Supplier
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3182
DANIEL ROBERT LEFEBVRE M.D.
Ophthalmology
243 CHARLES ST, 10TH FLOOR -- OPHTHALMIC PLASTIC SURGERY
BOSTON, MA 02114
Suffolk County (617) 523-7900
ELLIOTT D. KOZIN MD
Otolaryngology
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-6545
DR. LUCIA K SOMBERG MD, MPH
Emergency Medicine
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3431
MS. JANET ENGLISH HUETTIG LICSW
Social Worker (Clinical)
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3548
KYUNG OH DO, MS
Anesthesiology
243 CHARLES ST
BOSTON, MA 02114
Suffolk County (617) 573-3380

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 Erin Oakley's NPI number?

The NPI number for Erin Oakley is 1245691146. It was assigned to this individual provider in the NPPES registry on March 19, 2016. The provider is also known as Miss Erin Margaret Gallivan.

Where is Erin Oakley located?

Erin Oakley practices at 243 Charles St, Boston, MA 02114. The listed phone number is (617) 573-3431.

What is Erin Oakley's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Erin Oakley enrolled in Medicare?

Yes. Erin Oakley 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.

Is Erin Oakley affiliated with any hospitals?

According to CMS data, Erin Oakley is affiliated with Lawrence General Hospital and Massachusetts Eye And Ear Infirmary -.

When was this NPI record last updated?

The NPPES record for Erin Oakley was last updated on August 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.