Dr. Frederick Sieber , MD
Anesthesiology โข Baltimore, MD
600 N Wolfe St
Baltimore, MD 212870005
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Frederick Sieber is listed in NPPES under Anesthesiology.
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NPI assigned on July 3, 2006; this date does not establish years in practice.
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Published CMS data list 53 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 01844 โ Anesthesia for placement or revision of blood flow shunt: 18 service units.
- 00812 โ Anesthesia for exam of colon using an endoscope: 13 service units.
- 00731 โ Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope: 11 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table ยท Guide: How to read Medicare Part B data
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Fewer Medicare Part B services than 75% of clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: 114. Middle half: 54 to 209.
Fewer Medicare Part B services than 75% of clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: 130. Middle half: 57 to 250.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 36 in 2020 to 53 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
600 N Wolfe St
Baltimore, MD 212870005
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Johns Hopkins University. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
University Of Pittsburgh School Of Medicine
1981
What Public CMS Data Show
Anesthesiology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
166 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2024.
Medicare-allowed amount
About $8,186 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Paid by Medicare
About $6,398 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019โ2025.
Years since graduation
45 years (graduated 1981)
CMS Doctors and Clinicians data list 1981 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Sieber has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Sieber as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Baltimore and Maryland
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 75% of clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: 114. Middle half: 54 to 209.
Fewer Medicare Part B services than 75% of clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: 130. Middle half: 57 to 250.
Medicare-allowed amount
A lower Medicare-allowed amount than 70% of clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: $15,010. Middle half: $6,717 to $29,304.
A lower Medicare-allowed amount than 70% of clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: $17,166. Middle half: $7,219 to $33,664.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Anesthesiology in Baltimore, MD (2024, 312 clinicians with data). Median for this group: $11,993. Middle half: $5,357 to $23,267.
A lower Medicare payment amount than 70% of clinicians listed under Anesthesiology in Maryland (2024, 669 clinicians with data). Median for this group: $13,723. Middle half: $5,712 to $26,668.
524 active clinicians are listed under Anesthesiology with a practice address in Baltimore, MD (1,258 in Maryland).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Baltimore
1.1% of these 524 clinicians have the CMS telehealth indicator.
50.6% of these 524 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 47% from 36 in 2020 to 53 in 2024.
- 2020: 36
- 2021: 52
- 2022: 76
- 2023: 60
- 2024: 53
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Medicare-allowed amount
Medicare-allowed amount increased 34% from $6,113 in 2020 to $8,186 in 2024.
- 2020: $6,113
- 2021: $7,349
- 2022: $13,658
- 2023: $7,081
- 2024: $8,186
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Paid by Medicare
Paid by Medicare increased 36% from $4,692 in 2020 to $6,398 in 2024.
- 2020: $4,692
- 2021: $5,734
- 2022: $10,780
- 2023: $5,287
- 2024: $6,398
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท Report an error.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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01844
Anesthesia for placement or revision of blood flow shunt
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18 | 17 | $2500.00 | $162.73 |
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00812
Anesthesia for exam of colon using an endoscope
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13 | 13 | $1292.31 | $67.62 |
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00731
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope
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11 | 11 | $1472.73 | $88.32 |
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00790
Anesthesia for other procedure on upper abdomen
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11 | 11 | $3422.73 | $309.69 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 207L00000X
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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ANESTHESIOLOGY
I20100629000131
MD
6507997962
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
Johns Hopkins University
4940 Eastern Ave, Baltimore, MD 212242735
Phone: 4105500100
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Anesthesiology
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Anesthesiology
Doctor of Medicine (M.D.)
Nurse Anesthetist, Certified Registered
Certified Registered Nurse Anesthetist
Anesthesiology - Pain Medicine
Doctor of Medicine (M.D.)
Anesthesiology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated July 03, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to November 2026.
NPI Administrative Meta
Other Anesthesiology Specialists in Baltimore
- Dr. Jeffrey Shapiro, MD
- Dr. Jessica Galey, MD
- Dr. Katerina Neste Gallisa, MD
- Dr. Joelle Smith, MD
- Dr. Rabi Panigrahi, MD
- Dr. Monica Agree, MD
Mailing Address
Po Box 64382
Baltimore, MD 212644382
Phone: 4105500942