DR. THOMAS JACOB KLEIN (M.D., PH.D.) – Radiation Oncology Physician, NPI 1396902813

Radiation Oncology Physician

DR. THOMAS JACOB KLEIN (M.D., PH.D.) is a healthcare provider. based in Loxahatchee, Florida. specializing in RADIATION ONCOLOGY. They hold the professional credentials M.D., PH.D.. They hold a License No. ME116839 (FL). The NPI Number for DR. THOMAS JACOB KLEIN (M.D., PH.D.) is 1396902813

Main info

Male

18 Years Of Experience

Accepts Medicare Assignment

Name

DR. THOMAS JACOB KLEIN (M.D., PH.D.)

NPI

1396902813

Phone

(561) 784-9008

Address

12993 Southern Blvd

Enumeration Date

21 May 2008

Last Update Date

19 February 2021

Doctor Profile

Medical School Name

ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI

Secondary Phone

5612770786

Graduation Year

2008 (18 years ago)

PAC ID

4082856646

Group Practice PAC ID

1658613096

Professional Enrollment ID

I20130809000532

Address ID

FL334174628WE4832XBLVD300

Data current as of

20 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience65

Completeness75

Years active:18State licenses:1Digital endpointsOther names

494 RADIATION ONCOLOGY in FL

Provider Addresses for DR. THOMAS JACOB KLEIN (M.D., PH.D.)

12993 Southern Blvd
Loxahatchee, FL 334709215
Phone: (561) 784-9008
Fax: (561) 784-0905
Type: Location
2234, Colonial Boulevard, Fort Myers, Lee County, Florida, 33907, United States
ATTN: PAYER CONTRACTING & RELATIONS DEPT.
FORT MYERS, FL 339071412
Phone: (239) 931-7342
Fax: (239) 931-7385
Type: Mailing
12993, Southern Boulevard, Royal Palm Beach, Palm Beach County, Florida, 33470, United States
LOXAHATCHEE, FL 334709215
Phone: (561) 784-9008
Fax: (561) 784-0905
Type: Location
1860 BOY SCOUT DR STE 201
FORT MYERS, FL 339072119
Phone: (239) 215-1180
Fax: (239) 215-1179
Type: Mailing
7850 N UNIVERSITY DR
TAMARAC, FL 333212114
Phone: (754) 205-0099
Fax: (954) 388-5849
Type: Location

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

Loading prescription activity...

Open Payments (CMS)

CMS reports 23 Open Payments records for all available years, with a total value of $2,024.

Total Amount is formed as General ($2,024) + Research ($0) + Ownership ($0) = $2,024.

Last reported payment date: 2024-11-19 • Largest payer in this snapshot: Carl Zeiss Meditec USA, Inc. ($1,460).

Total Amount

$2,024

General + Research + Ownership

Payments

Total payment records

General Amount

$2,024

General payments

Research Amount

Research funding

Ownership Amount

Ownership interests

Ownership Count

Ownership records

Last Payment Date

2024-11-19

Latest reported date

Top Companies

Largest payers in this snapshot

Company	Amount
Carl Zeiss Meditec USA, Inc.	$1,460
Boston Scientific Corporation	$137
AstraZeneca Pharmaceuticals LP	$132
Myriad Genetic Laboratories, Inc.	$92
Merck Sharp & Dohme LLC	$67

View all Open Payments →|Open Payments Risk Radar →

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

PECOS enrollment status

Participating (accepts Medicare assignment)

Enrollment effective: 2013-08-09

PECOS data refreshed: 2026-05-27

Medicare revalidation (CMS due date list)

Due date not assigned yet

CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.

Enrollment records

Earliest due date

Not assigned (TBD)

CMS data updated

2026-06-01

Revalidation progress

Medicare enrolled
On CMS revalidation list
Due date assigned
Revalidate in PECOS

CMS enrollment records

Enrollment ID	Type	Specialty	State	Due date
I20130809000532	I	Radiation Oncology	FL	TBD

What to do next

No action required while the due date shows TBD.
Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.

Verify on CMS Revalidation Lookup Tool

Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS

Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

Top Medicare procedures (2023) · refreshed 2026-05-27

HCPCS	Description	Services	Beneficiaries	Medicare allowed
77014	Ct guidance for insertion of radiation therapy fields	496	21	$0
G6015	Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session	346	18	$0
G6012	Radiation treatment delivery,3 or more separate treatment areas, custom blocking, tangential ports, wedges, rotational beam, compensators, electron beam; 6-10 mev	274	19	$0
77336	Continuing radiation therapy consultation per week	175	41	$0
G6002	Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy	163	13	$0

View full utilization report →

Insurance plans in this area (ZIP 33470)

Loading plans...

Provider's Procedures

DR. THOMAS JACOB KLEIN (M.D., PH.D.) performs procedures in RADIATION ONCOLOGY. See the list of HCPCS codes below.

Specialty	Practice State	HCPCS Code	Description	Service Count	Beneficiary Count
RADIATION ONCOLOGY	FL	77263	Management of radiation therapy, complex	47	46
RADIATION ONCOLOGY	FL	77300	Calculation of radiation therapy dose	428	48

Group practice members

Group practice members are other physicians who share the same Group Practice PAC ID with this doctor. When doctors form a group practice and register in PECOS as a single entity, they receive a shared identification number. This table lists all providers in the same group practice.

PAC ID: 1658613096View full group profile

Name	Specialty	State
DR. BRIAN DOUGLAS LAWENDA (M.D.)	Radiation Oncology	WA
DR. EVAN M. LANDAU (MD)	Radiation Oncology	FL
JAMES H. RUBENSTEIN (MD)	Radiation Oncology	FL
TODD A PEZZI (MD)	Radiation Oncology	FL
DR. TIMOTHY L. KERWIN (MD)	Radiation Oncology	FL
ARIEL POLLOCK (MD)	Radiation Oncology	MD
SHANNON M MACDONALD (MD)	Radiation Oncology	MA
DR. SONAL SURA (MD)	Radiation Oncology	FL
DAVID J. RICE (MD)	Radiation Oncology	FL
MARY KOSHY (M.D.)	Radiation Oncology	FL

Reviews

All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.

No reviews yet. Be the first to share your experience — your opinion helps families compare providers.

Frequently asked questions

How is DR. THOMAS JACOB KLEIN (M.D., PH.D.) identified in CMS data?

CMS-hosted NPPES data lists DR. THOMAS JACOB KLEIN (M.D., PH.D.) with NPI 1396902813.

Can I rely on DR. THOMAS JACOB KLEIN (M.D., PH.D.) being an active provider?

As of the registry snapshot, DR. THOMAS JACOB KLEIN (M.D., PH.D.) is marked active.

What taxonomy line describes DR. THOMAS JACOB KLEIN (M.D., PH.D.)?

For research purposes, treat DR. THOMAS JACOB KLEIN (M.D., PH.D.) as Radiation Oncology Physician in this dataset. Clinical services aligned with this taxonomy classification.

Where is DR. THOMAS JACOB KLEIN (M.D., PH.D.) based?

DR. THOMAS JACOB KLEIN (M.D., PH.D.) is tied to Loxahatchee, Florida in the data we show; additional addresses may exist on the full record.

Why does DR. THOMAS JACOB KLEIN (M.D., PH.D.) have multiple addresses?

5 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.