ELENA NIKOU THEODOSIOU MD
NPI 1891730982
Internal Medicine - Hematology & Oncology in Portsmouth, NH

Q: What is Elena Theodosiou's NPI number?

The NPI number for Elena Theodosiou is 1891730982. It was assigned to this individual provider in the NPPES registry on June 20, 2006.

Q: What is Elena Theodosiou's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Elena Theodosiou was last updated on June 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.

Active since June 20, 2006PECOS EnrolledAccepts Medicare Assignment

155 BORTHWICK AVE, SUITE 301, PORTSMOUTH, NH 03801(603) 433-5226(603) 433-4939 Get Directions Write a Review

NPPES record last updated: June 9, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jun 9, 2021, Feb 27, 2017 (2 updates tracked since 2017).

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About Elena Nikou Theodosiou Md NPPES

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

ELENA NIKOU THEODOSIOU MD (NPI 1891730982) is an individual hematology & oncology provider in Portsmouth, New Hampshire, licensed in New Hampshire (16333) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with St Peter's Hospital, and maintains a secondary practice location in Troy.

NPPES Registry Identity

NPI1891730982

Entity TypeIndividualFemale

Primary Taxonomy207RH0003X

Provider Legal NameELENA NIKOU THEODOSIOUCredential: MD

Location Address155 BORTHWICK AVE, SUITE 301Portsmouth, NH 03801-7156

Mailing Address155 Borthwick Ave, Suite 301Portsmouth, NH 03801-7156 · (603) 433-5226 · Fax (603) 433-4939

Phone(603) 433-5226

Fax(603) 433-4939

Sole ProprietorNo

Medical School CMSOtherGraduated 1996

Enumeration DateJune 20, 2006

Last NPPES UpdateJune 9, 20212 updates tracked since enumeration

NPPES CertifiedMay 25, 2021

✔ NPI 1891730982 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RH0003X

Licenses✔ Licensed in NH · 16333✔ Licensed in NY · 290174✔ Licensed in ME · 016524

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.

155 BORTHWICK AVE, Portsmouth, NH 03801

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Secondary Practice Location 1

Location 11300 Massachusetts Avenue, Hildegard Medicus Cancer CenterTroy, NY 12180-1628 · Phone (518) 268-5060

Other Identifiers 1

Medicaid3092047NH

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Elena Nikou Theodosiou Md 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 ID5092788216

PECOS Enrollment IDI20170913001180

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

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 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.

86 services29 patients

Hospital Affiliations CMS Care Compare 2

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

St Peter's Hospital

Acute Care Hospitals · Albany, NY

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330057

Location315 South Manning BoulevardAlbany, NY 12208 · Albany County

Emergency services Birthing friendly

Samaritan Hospital Of Troy, New York

Acute Care Hospitals · Troy, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330180

Location2215 Burdett AvenueTroy, NY 12180 · Rensselaer County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 03801 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

$174.26 typical visit price

range $57.75 – $174.26

Typical copayment $43.56 (range $14.43 – $43.56)

Most-billed visit code 99205

Established Patient

$101.54 typical visit price

range $18.70 – $142.15

Typical copayment $25.38 (range $4.67 – $35.53)

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.

Referred Medical Equipment & Supplies CMS DME claims 4

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

1 supplier40 claims40 services$18.24 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

1 supplier40 claims40 services$35.72 avg. paid by Medicare

Capecitabine, oral, 500 mg J8521

Treatment-Treatment - Miscellaneous · category RX029N

1 supplier12 claims924 services$0.68 avg. paid by Medicare

Injection, fluorouracil, 500 mg J9190

Treatment-Chemotherapy · category RH002N

1 supplier41 claims392 services$1.54 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 20

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

APPLEDORE MEDICAL GROUP-DIABETES RESOURCE CENTER

Dietitian, Registered

155 BORTHWICK AVE
PORTSMOUTH, NH 03801

Rockingham County (603) 433-5160

DANIEL L DAVIES DO

Internal Medicine

155 BORTHWICK AVE, SUITE 202W
PORTSMOUTH, NH 03801

Rockingham County (603) 433-8434

HNNH LLC

Naturopath

155 BORTHWICK AVE, WEST #102
PORTSMOUTH, NH 03801

Rockingham County (603) 610-7778

AMIRA DIAMOND-BIER ND

Naturopath

155 BORTHWICK AVE
PORTSMOUTH, NH 03801

Rockingham County (603) 610-7778

DR. CHRISTOPHER TURNER O.D.

Optometrist

155 BORTHWICK AVE, SUITE 200 EAST
PORTSMOUTH, NH 03801

Rockingham County (603) 501-7868

DR. STEPHEN P. BRADY M.D.

Dermatology (Dermatopathology)

155 BORTHWICK AVE, SUITE 201 WEST
PORTSMOUTH, NH 03801

Rockingham County (603) 433-9575

TABAREK KADHIM

Optometrist

155 BORTHWICK AVE
PORTSMOUTH, NH 03801

Rockingham County (603) 436-1773

DR. IAN D BIER ND., LAC, PHD

Naturopath

155 BORTHWICK AVE, WEST SUITE 102
PORTSMOUTH, NH 03801

Rockingham County (603) 610-7778

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 Elena Theodosiou's NPI number?

The NPI number for Elena Theodosiou is 1891730982. It was assigned to this individual provider in the NPPES registry on June 20, 2006.

Where is Elena Theodosiou located?

Elena Theodosiou practices at 155 Borthwick Ave Suite 301, Portsmouth, NH 03801. The listed phone number is (603) 433-5226.

What is Elena Theodosiou's specialty?

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

Is Elena Theodosiou enrolled in Medicare?

Yes. Elena Theodosiou 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.

Is Elena Theodosiou affiliated with any hospitals?

According to CMS data, Elena Theodosiou is affiliated with St Peter's Hospital and Samaritan Hospital Of Troy, New York.

When was this NPI record last updated?

The NPPES record for Elena Theodosiou was last updated on June 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.