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DR. ALEXANDER JOSEPH AMBINDER M.D.
NPI 1629411558
Internal Medicine - Hematology & Oncology in Baltimore, MD

Active since April 10, 2013PECOS Enrolled
74.39/100
CMS Quality Rating
1650 ORLEANS ST # 1186, BALTIMORE, MD 21287(410) 614-4459(410) 955-0125 Get Directions Write a Review

NPPES record last updated: March 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Mar 16, 2026, Sep 14, 2021, Mar 14, 2017 (3 updates tracked since 2017).

About Dr. Alexander Joseph Ambinder M.d. NPPES

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

DR. ALEXANDER JOSEPH AMBINDER M.D. (NPI 1629411558) is an individual hematology & oncology provider in Baltimore, Maryland, licensed in Maryland (D81117) and active in the NPI registry since April 2013. He is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and is a graduate of Emory University School Of Medicine (2013).

NPPES Registry Identity

NPI1629411558
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. ALEXANDER JOSEPH AMBINDERCredential: M.D.
Location Address1650 ORLEANS ST # 1186Baltimore, MD 21287-0013
Mailing Address6201 Greenleigh AveMiddle River, MD 21220-2004 · (410) 933-1340
Phone(410) 614-4459
Fax(410) 955-0125
Sole ProprietorNo
Medical School CMSEmory University School Of MedicineGraduated 2013
Enumeration DateApril 10, 2013
Last NPPES UpdateMarch 16, 20263 updates tracked since enumeration
NPPES CertifiedMarch 16, 2026
✔ NPI 1629411558 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in MD · D81117
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License D0081117 (MD)
1650 ORLEANS ST # 1186, Baltimore, MD 21287
Open in Google Maps ↗

Other Identifiers 1

OtherD81117MD · Md License

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexander Joseph Ambinder M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3779710587
PECOS Enrollment IDI20170801000207
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 8

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.
167 services54 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.
92 services28 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.
59 services40 patients
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.
52 services35 patients
Bone marrow, smear interpretation 85097
Bone marrow smear interpretation is a procedure where a small sample of your bone marrow is taken and examined under a microscope. This helps doctors identify any abnormal cells or signs of diseases such as anemia, leukemia, or infections. It's a crucial step in diagnosing various blood disorders.
38 services36 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.
29 services29 patients

Hospital Affiliations CMS Care Compare

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

Johns Hopkins Hospital, The

Acute Care Hospitals · Baltimore, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210009
Location600 North Wolfe StreetBaltimore, MD 21287 · Baltimore City County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21287 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
$183.44 typical visit price
range $60.73 – $183.44
Typical copayment $45.86 (range $15.18 – $45.86)
Most-billed visit code 99205
Established Patient
$106.59 typical visit price
range $19.60 – $149.17
Typical copayment $26.64 (range $4.90 – $37.29)
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.

74.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.71
Promoting Interoperability97
Improvement Activities40
Cost52.43

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supplies for maintenance of non-insulin drug infusion catheter, per week (list drugs separately) A4221
DME-Other DME · category DE017N
2 suppliers16 claims16 services$18.37 avg. paid by Medicare
Infusion supplies for external drug infusion pump, per cassette or bag (list drugs separately) A4222
DME-Medical/Surgical Supplies · category DA000N
2 suppliers17 claims27 services$35.53 avg. paid by Medicare
Injection, blinatumomab, 1 microgram J9039
Treatment-Chemotherapy · category RH002N
2 suppliers18 claims1,960 services$101.59 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

ELLERY ALTSHULER MD
Internal Medicine (Hematology & Oncology)
1650 ORLEANS ST # 1186
BALTIMORE, MD 21287
Baltimore City (305) 389-6231
MAY TUN SAUNG M.D.
Internal Medicine (Hematology & Oncology)
1650 ORLEANS ST # 1186, JOHNS HOPKINS SIDNEY KIMMEL COMPREHENSIVE CANCER CENTER
BALTIMORE, MD 21287
Baltimore City (410) 614-4459
DR. FYZA SHAIKH MD, PHD
Internal Medicine
1650 ORLEANS ST # 1186
BALTIMORE, MD 21287
Baltimore City (410) 614-4459

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 Alexander Ambinder's NPI number?

The NPI number for Alexander Ambinder is 1629411558. It was assigned to this individual provider in the NPPES registry on April 10, 2013.

Where is Alexander Ambinder located?

Alexander Ambinder practices at 1650 Orleans St # 1186, Baltimore, MD 21287. The listed phone number is (410) 614-4459.

What is Alexander Ambinder's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Alexander Ambinder enrolled in Medicare?

Yes. Alexander Ambinder is registered in the Medicare PECOS enrollment system.

Is Alexander Ambinder affiliated with any hospitals?

According to CMS data, Alexander Ambinder is affiliated with Johns Hopkins Hospital, The.

When was this NPI record last updated?

The NPPES record for Alexander Ambinder was last updated on March 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.