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DR. CARSTEN HARTWIG RITTER MD
NPI 1982869343
Psychiatry & Neurology - Vascular Neurology in Baltimore, MD

Active since July 25, 2008PECOS Enrolled
5051 GREENSPRING AVE STE 300, THE SANDRA AND MALCOLM BERMAN BRAIN & SPINE INSTITUTE, BALTIMORE, MD 21209(410) 601-8077(410) 601-8905 Get Directions Write a Review

NPPES record last updated: June 6, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 6, 2025, Oct 31, 2023, Jan 6, 2023 and 1 more (4 updates tracked since 2021).

About Dr. Carsten Hartwig Ritter Md NPPES

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

DR. CARSTEN HARTWIG RITTER MD (NPI 1982869343) is an individual vascular neurology provider in Baltimore, Maryland, licensed in Maryland (D69589) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS, is affiliated with Sinai Hospital Of Baltimore, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1982869343
Entity TypeIndividualMale
Primary Taxonomy2084V0102X
Provider Legal NameDR. CARSTEN HARTWIG RITTERCredential: MD
Location Address5051 GREENSPRING AVE STE 300, THE SANDRA AND MALCOLM BERMAN BRAIN & SPINE INSTITUTEBaltimore, MD 21209-4358
Mailing Address5051 Greenspring Ave Ste 300, The Sandra And Malcolm Berman Brain & Spine InstituteBaltimore, MD 21209-4358 · (410) 601-8077 · Fax (410) 601-8905
Phone(410) 601-8077
Fax(410) 601-8905
Sole ProprietorNo
Medical School CMSOtherGraduated 2002
Enumeration DateJuly 25, 2008
Last NPPES UpdateJune 6, 20254 updates tracked since enumeration
NPPES CertifiedJune 6, 2025
✔ NPI 1982869343 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · Vascular NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084V0102X
Licenses✔ Licensed in MD · D69589✔ Licensed in DC · MD038152✔ Licensed in ID · MC-1815✔ Licensed in MS · 30262✔ Licensed in MO · 2025017339
Definition
Vascular Neurology is a subspecialty in the evaluation, prevention, treatment and recovery from vascular diseases of the nervous system. This subspecialty includes the diagnosis and treatment of vascular events of arterial or venous origin from a large number of causes that affect the brain or spinal cord such as ischemic stroke, intracranial hemorrhage, spinal cord ischemia and spinal cord hemorrhage.
5051 GREENSPRING AVE STE 300, Baltimore, MD 21209
Open in Google Maps ↗

Secondary Practice Locations 3

Location 11055 N Curtis RdBoise, ID 83706-1309 · Phone (208) 302-4200 · Fax (208) 302-4255
Location 21225 N State StJackson, MS 39202-2064 · Phone (601) 988-5281
Location 31235 E Cherokee StSpringfield, MO 65804-2203 · Phone (417) 820-6435

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Carsten Hartwig Ritter Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2961674296
PECOS Enrollment IDI20111011000331, I20250612002715
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 Carsten Ritter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Sinai Hospital Of Baltimore Inc
Same address
General Acute Care Hospital
5051 GREENSPRING AVE, SUITE 300
Baltimore, MD 21209
  • Reassigned Medicare billing, Maryland enrollment
  • 664 clinicians in this Medicare group
NPI 1669497285 (410) 601-9515
Mercy Clinic Springfield Communities
800 mi
Rural Health
518 PINE ST
Steelville, MO 65565
  • Reassigned Medicare billing, Missouri enrollment
  • Also billed through NPI 1245277631 (Missouri)
  • 1,487 clinicians in this Medicare group
NPI 1669504411 (573) 775-5838

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
116 services73 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
64 services64 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.
56 services47 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
48 services23 patients
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes 99221
Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.
18 services18 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
12 services12 patients

Hospital Affiliations CMS Care Compare 3

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

Sinai Hospital Of Baltimore

Acute Care Hospitals · Baltimore, MD
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210012
Location2401 West Belvedere AvenueBaltimore, MD 21215 · Baltimore City County
Emergency services Birthing friendly

Northwest Hospital Center

Acute Care Hospitals · Randallstown, MD
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210040
Location5401 Old Court RoadRandallstown, MD 21133 · Baltimore County
Emergency services

Mercy Hospital Springfield

Acute Care Hospitals · Springfield, MO
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number260065
Location1235 E CherokeeSpringfield, MO 65804 · Greene County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 21209 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
$139.05 typical visit price
range $60.73 – $183.44
Typical copayment $34.76 (range $15.18 – $45.86)
Most-billed visit code 99204
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.

Other Providers at the Same Location NPPES 2

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

ADAM KARDON DO
Psychiatry & Neurology (Neurology)
5051 GREENSPRING AVE STE 300
BALTIMORE, MD 21209
Baltimore County (410) 601-9515
LIFEBRIDGE ORTHOPEDIC SPECIALISTS, LLC
Neurological Surgery
5051 GREENSPRING AVE STE 300
BALTIMORE, MD 21209
Baltimore County (410) 601-4417

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 Carsten Ritter's NPI number?

The NPI number for Carsten Ritter is 1982869343. It was assigned to this individual provider in the NPPES registry on July 25, 2008.

Where is Carsten Ritter located?

Carsten Ritter practices at 5051 Greenspring Ave Ste 300 The Sandra And Malcolm Berman Brain & Spine Institute, Baltimore, MD 21209. The listed phone number is (410) 601-8077.

What is Carsten Ritter's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Vascular Neurology, with taxonomy code 2084V0102X.

Is Carsten Ritter enrolled in Medicare?

Yes. Carsten Ritter is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Carsten Ritter's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Carsten Ritter reassigns Medicare benefits to 2 organizations: Sinai Hospital Of Baltimore Inc (Baltimore, MD) and Mercy Clinic Springfield Communities (Steelville, MO). 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 Carsten Ritter's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Carsten Ritter affiliated with any hospitals?

According to CMS data, Carsten Ritter is affiliated with Sinai Hospital Of Baltimore, Northwest Hospital Center and Mercy Hospital Springfield.

When was this NPI record last updated?

The NPPES record for Carsten Ritter was last updated on June 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.