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ALEXANDRA STILLMAN M.D.
NPI 1710206248
Psychiatry & Neurology - Neurology in Boston, MA

Active since May 24, 2010PECOS EnrolledAccepts Medicare Assignment
330 BROOKLINE AVE, KIRSTEIN 4, BOSTON, MA 02215(617) 667-7000 Get Directions Write a Review

NPPES record last updated: February 12, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Alexandra Stillman M.d. NPPES

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

ALEXANDRA STILLMAN M.D. (NPI 1710206248) is an individual neurology provider in Boston, Massachusetts, licensed in Massachusetts (258259) and active in the NPI registry since May 2010. She is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Hospital - Needham, and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1710206248
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameALEXANDRA STILLMANCredential: M.D.
Location Address330 BROOKLINE AVE, KIRSTEIN 4Boston, MA 02215-5400
Mailing Address330 Brookline Ave, Kirstein 4Boston, MA 02215-5400 · (617) 667-7000
Phone(617) 667-7000
Sole ProprietorYes
Medical School CMSBoston University School Of MedicineGraduated 2010
Enumeration DateMay 24, 2010
Last NPPES UpdateFebruary 12, 2026
NPPES CertifiedMarch 17, 2025
✔ NPI 1710206248 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in MA · 258259
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 BROOKLINE AVE, Boston, MA 02215
Open in Google Maps ↗

Secondary Practice Location 1

Location 155 Fruit StBoston, MA 02114-2621 · Phone (617) 349-5708

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.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

Alexandra Stillman 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 ID8820212400
PECOS Enrollment IDI20140623000991
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

5

Medicare enrollment records show Alexandra Stillman reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Beth Israel Deaconess Medical Center, Inc.
Same address
General Acute Care Hospital
330 BROOKLINE AVE, ST 207
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,477 clinicians in this Medicare group
NPI 1548202641 (617) 667-1961
Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc
Same address
Internal Medicine
330 BROOKLINE AVE
Boston, MA 02215
  • Reassigned Medicare billing, Massachusetts enrollment
  • Also billed through NPI 1992745236 (Massachusetts)
  • 2,579 clinicians in this Medicare group
NPI 1194765438 (617) 754-9600
The General Hospital Corporation
2.5 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Massachusetts General Physicians Organization Inc
2.5 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
Mount Auburn Professional Services Inc
2.8 mi
Internal Medicine
330 MOUNT AUBURN ST
Cambridge, MA 02138
  • Reassigned Medicare billing, Massachusetts enrollment
  • 423 clinicians in this Medicare group
NPI 1992750996 (617) 499-5654

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 6

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.

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
89 services88 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.
87 services64 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.
61 services33 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
60 services44 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.
41 services35 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.
25 services25 patients

Hospital Affiliations CMS Care Compare 3

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

Beth Israel Deaconess Hospital - Needham

Acute Care Hospitals · Needham, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220083
Location148 Chestnut StreetNeedham, MA 02494 · Norfolk County
Emergency services

Beth Israel Deaconess Medical Center

Acute Care Hospitals · Boston, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220086
Location330 Brookline AvenueBoston, MA 02215 · Suffolk County
Emergency services Birthing friendly

Lahey Hospital & Medical Center, Burlington

Acute Care Hospitals · Burlington, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220171
Location41 & 45 Mall RoadBurlington, MA 01803 · Middlesex County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02215 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
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.

BETH ISRAEL DEACONESS MEDICAL CENTER
Chronic Disease Hospital (Children)
330 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 677-4042
DR. BRIAN DANIEL HOBBS MD, MMSC
Internal Medicine
330 BROOKLINE AVE, PULMONARY AND CRITICAL CARE DEPARTMENT
BOSTON, MA 02215
Suffolk County (617) 667-5864
ERICA DOMMASCH MD
Dermatology
330 BROOKLINE AVE, SHAPIRO 2
BOSTON, MA 02215
Suffolk County (617) 667-3753
VAHID KIARAD M.D
Anesthesiology
330 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 667-7000
DR. MICHAEL R GOLDSTEIN PHD
Psychologist (Clinical)
330 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 356-7246
SARA MURDOCK CAHILL MD
Hospitalist
330 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 667-7000
DR. DEVON ABT HARRIS MD
Obstetrics & Gynecology (Gynecologic Oncology)
330 BROOKLINE AVE, KIRSTEIN 3
BOSTON, MA 02215
Suffolk County (617) 667-3736
DR. ELIZABETH MAIER BALOUGH MD, PHD
Student in an Organized Health Care Education/Training Program
330 BROOKLINE AVE
BOSTON, MA 02215
Suffolk County (617) 667-7000

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 Alexandra Stillman's NPI number?

The NPI number for Alexandra Stillman is 1710206248. It was assigned to this individual provider in the NPPES registry on May 24, 2010.

Where is Alexandra Stillman located?

Alexandra Stillman practices at 330 Brookline Ave Kirstein 4, Boston, MA 02215. The listed phone number is (617) 667-7000.

What is Alexandra Stillman's specialty?

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

Is Alexandra Stillman enrolled in Medicare?

Yes. Alexandra Stillman 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 Alexandra Stillman's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexandra Stillman reassigns Medicare benefits to 5 organizations: Beth Israel Deaconess Medical Center, Inc. (Boston, MA), Harvard Medical Faculty Phys At Beth Israel Deaconess Med Ctr Inc (Boston, MA), The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and Mount Auburn Professional Services Inc (Cambridge, MA). 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 Alexandra Stillman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Alexandra Stillman accept?

Health plans from Taro Health list Alexandra Stillman 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 Alexandra Stillman affiliated with any hospitals?

According to CMS data, Alexandra Stillman is affiliated with Beth Israel Deaconess Hospital - Needham, Beth Israel Deaconess Medical Center and Lahey Hospital & Medical Center, Burlington.

When was this NPI record last updated?

The NPPES record for Alexandra Stillman was last updated on February 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.