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AARON SACHS M.D.
NPI 1003347238
Anesthesiology in Baltimore, MD

Active since March 21, 2017PECOS EnrolledAccepts Medicare Assignment
22 S GREENE ST # S11C, UNIVERSITY OF MARYLAND DEPARTMENT OF ANESTHESIA, BALTIMORE, MD 21201(410) 328-1239 Get Directions Write a Review

NPPES record last updated: June 28, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Aaron Sachs M.d. NPPES

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

AARON SACHS M.D. (NPI 1003347238) is an individual anesthesiology provider in Baltimore, Maryland, licensed in Maryland (D0097827) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2017).

NPPES Registry Identity

NPI1003347238
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameAARON SACHSCredential: M.D.
Location Address22 S GREENE ST # S11C, UNIVERSITY OF MARYLAND DEPARTMENT OF ANESTHESIABaltimore, MD 21201-1544
Mailing Address22 S Greene St # S11c, University Of Maryland Department Of AnesthesiaBaltimore, MD 21201-1544 · (410) 328-1239
Phone(410) 328-1239
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 2017
Enumeration DateMarch 21, 2017
Last NPPES UpdateJune 28, 2023
NPPES CertifiedJune 28, 2023
✔ NPI 1003347238 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in MD · D0097827
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
22 S GREENE ST # S11C, Baltimore, MD 21201
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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

Aaron Sachs 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 ID1951648252
PECOS Enrollment IDI20230908001441
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

2

Medicare enrollment records show Aaron Sachs reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medstar Medical Group Anesthesiology LLC
2.9 mi
Anesthesiology
201 E UNIVERSITY PKWY
Baltimore, MD 21218
  • Reassigned Medicare billing, District of Columbia enrollment
  • 482 clinicians in this Medicare group
NPI 1528578333 (703) 558-1403
Medstar Medical Group II LLC
5.3 mi
General Practice
5601 LOCH RAVEN BLVD, RUSSELL MORGAN BLDG 3RD FL
Baltimore, MD 21239
  • Reassigned Medicare billing, District of Columbia enrollment
  • 3,530 clinicians in this Medicare group
NPI 1184046187 (443) 444-5606

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 14

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.

Insertion of artery tube for blood sampling or infusion through skin 36620
This procedure involves placing a small tube into an artery, usually in the wrist or elbow, to collect blood samples or administer medication. It's done under local anesthesia and is a common, safe practice.
126 services125 patients
Ultrasonic guidance for blood vessel access 76937
Ultrasonic guidance for blood vessel access is a medical procedure where sound waves are used to create images of your blood vessels. This helps doctors to accurately locate and access the vessels for treatments or tests, ensuring safety and precision.
93 services93 patients
Anesthesia for procedure on heart and large blood vessels 00560
Anesthesia for heart and large blood vessel procedures involves using medications to block sensation, ensuring you don't feel pain during surgery. It can be general (you're asleep) or regional (part of your body is numbed). It helps ensure comfort and safety throughout the operation.
47 services47 patients
Ultrasound of heart with probe in esophagus, with report 93312
This procedure, called a transesophageal echocardiogram, uses a small probe passed into your esophagus to capture detailed images of your heart. The report provides information about your heart's structure and function.
47 services47 patients
Ultrasound of heart blood flow, valves and chambers 93320
An ultrasound of your heart, also known as an echocardiogram, is a test that uses sound waves to create detailed images of your heart. It helps doctors check the health of your heart's chambers, valves, and blood flow.
45 services45 patients
Ultrasound of heart with color-depicted blood flow, rate and valve function 93325
An ultrasound of the heart, also known as an echocardiogram, uses sound waves to create pictures of your heart. It shows the structure, movement, and blood flow within your heart. This helps assess the heart's health and function, including the valves and rate.
45 services45 patients

Other Providers at the Same Location NPPES 17

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

MICHAEL BRUSH
Student in an Organized Health Care Education/Training Program
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (763) 350-2254
DR. CHRISTOPHER PARRINO MD
Anesthesiology
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (410) 328-1239
JAMES SEJOON KIM MD
Anesthesiology
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (410) 328-1239
BENJAMIN JON EIDE MD MPH
Student in an Organized Health Care Education/Training Program
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (612) 750-4483
DR. JOSEPH PATRICK BROOKE MD
Anesthesiology
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (703) 268-0471
DR. NICOLAS DORSEY M.D., PH.D.
Anesthesiology
22 S GREENE ST # S11C, DEPARTMENT OF ANESTHESIOLOGY
BALTIMORE, MD 21201
Baltimore City (667) 224-0861
DR. JEANNE KY M.D.
Anesthesiology
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (410) 328-1239
UNIVERSITY OF MARYLAND ANESTHESIOLOGY ASSOCIATES P.A.
Anesthesiology
22 S GREENE ST # S11C
BALTIMORE, MD 21201
Baltimore City (410) 328-6120

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 Aaron Sachs's NPI number?

The NPI number for Aaron Sachs is 1003347238. It was assigned to this individual provider in the NPPES registry on March 21, 2017.

Where is Aaron Sachs located?

Aaron Sachs practices at 22 S Greene St # S11c University Of Maryland Department Of Anesthesia, Baltimore, MD 21201. The listed phone number is (410) 328-1239.

What is Aaron Sachs's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Aaron Sachs enrolled in Medicare?

Yes. Aaron Sachs 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 Aaron Sachs's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Sachs reassigns Medicare benefits to 2 organizations: Medstar Medical Group Anesthesiology LLC (Baltimore, MD) and Medstar Medical Group II LLC (Baltimore, MD). 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 Aaron Sachs's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Aaron Sachs was last updated on June 28, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.