2026 NPPES data Physical Medicine & Rehabilitation Physician NPI 1124169040 M.D.
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ALEXANDRA THEISEN, M.D.

Physical Medicine & Rehabilitation Physician in CHELSEA, Michigan. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
1K
Medicare Part D claims · 174 beneficiaries · Physical Medicine & Rehabilitation Physician avg: 781
Generic prescribing
98%
generic claims · 2% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ALEXANDRA THEISEN, M.D. filed 1,257 Medicare Part D claims in 2023 as a Physical Medicine & Rehabilitation Physician in CHELSEA, Michigan, prescribing 98% generic.

1K
Part D claims, 2023
98%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

ALEXANDRA THEISEN, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,257 Top 22% higher than 78% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). This entry sits in this band. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

ALEXANDRA THEISEN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about ALEXANDRA THEISEN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/12/2007

NPI 1124169040

Primary specialty

Physical Medicine & Rehabilitation Physician

Mid-sized

15,306 US NPIs in this specialty

Medicare Part D claims

1,257 61% vs specialty avg

2023 prescription claims

Specialty avg: 781

Specialty distribution in Michigan

How Physical Medicine & Rehabilitation Physician compares to other specialties among Michigan providers

Michigan providers

Physical Medicine & Rehabilitation Physician share within Michigan

1. Physical Medicine & Rehabilitation Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physical Medicine & Rehabilitation Physician share within Michigan

Specialty board-certification context

Estimated specialty board-certified rate — Physical Medicine & Rehabilitation Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physical Medicine & Rehabilitation Physician ABMS/AOA estimate

Est. board-certified rate (Physical Medicine & Rehabilitation Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physical Medicine & Rehabilitation Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

ALEXANDRA THEISEN, M.D. appears in the CMS NPPES registry as a Physical Medicine & Rehabilitation Physician provider holding M.D. credentials at 14700 E OLD US HIGHWAY 12, CHELSEA, MI, 48118, with a listed phone of (734) 936-7175. NPI 1124169040 was issued on 02/12/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what THEISEN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,257 prescription claims written by this provider, covering 174 Medicare beneficiaries and totaling roughly $35K in drug spend, split 2% brand-name and 98% generic by claim count, with an opioid prescribing rate of 66.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Physical Medicine & Rehabilitation Physician is a mid-sized specialty nationwide, with 15,306 enrolled providers across 54 states and an average of 781 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

14700 E OLD US HIGHWAY 12
CHELSEA, MI 48118

Provider Details

NPI 1124169040
Specialty Physical Medicine & Rehabilitation Physician
Credentials M.D.
Gender Female
NPI Issued 02/12/2007

Hospital and facility affiliations

Facilities where ALEXANDRA THEISEN, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

REGENTS OF THE UNIVERSITY OF MICHIGAN
CHELSEA, MI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — Michigan MI-BOM 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 — they are NOT specific to ALEXANDRA THEISEN, M.D.. To verify ALEXANDRA THEISEN, M.D.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases

MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

ALEXANDRA THEISEN, M.D. — brand share 2.0%
Specialty average (est.)

2% brand-name claims vs 98% generic, on 1,257 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,257
Total Claims
$35K
Total Drug Cost
174
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,348
Total Day Supply
36,624
Brand vs Generic
2% brand / 98% generic
Brand Drug Cost
$11K
Generic Drug Cost
$25K
Opioid Claims
834 (66.3% rate)

Patient Demographics

Average Patient Age
70.2 years
Avg HCC Risk Score
1.05
Gender Split
71% female / 29% male
Age Distribution
<65: 47, 65-74: 75, 75-84: 41, 85+: 11

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What ALEXANDRA THEISEN, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
398
Gabapentin
163
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
158
Tramadol Hcl
120
Cyclobenzaprine Hcl
55
Oxycodone Hcl
51
Fentanyl
42
Meloxicam
33
Morphine Sulfate Er
Morphine Sulfate
32
Oxycontin
Oxycodone Hcl
29

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Physical Medicine & Rehabilitation Physician Overview

How ALEXANDRA THEISEN, M.D. fits within the Physical Medicine & Rehabilitation Physician landscape nationally.

15,306
Physical Medicine & Rehabilitation Physician Providers in US
54
States with Physical Medicine & Rehabilitation Physician
781
Avg Claims per Provider

ALEXANDRA THEISEN, M.D.'s 1,257 claims are above the specialty average of 781.

Nearby Physical Medicine & Rehabilitation Physician Providers in Michigan

Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as THEISEN.

Compare Physical Medicine & Rehabilitation Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALEXANDRA THEISEN, M.D.'s specialty?
ALEXANDRA THEISEN, M.D. specializes in Physical Medicine & Rehabilitation Physician and practices in CHELSEA, Michigan. Credentials: M.D..
How much does ALEXANDRA THEISEN, M.D. prescribe under Medicare Part D?
In 2023, ALEXANDRA THEISEN, M.D. wrote 1,257 Medicare Part D claims totaling $35K in drug costs for 174 beneficiaries.
Where is ALEXANDRA THEISEN, M.D. located?
ALEXANDRA THEISEN, M.D. is located at 14700 E OLD US HIGHWAY 12, CHELSEA, MI, 48118. Phone: (734) 936-7175.
What is ALEXANDRA THEISEN, M.D.'s NPI number?
ALEXANDRA THEISEN, M.D.'s National Provider Identifier (NPI) is 1124169040, issued on 02/12/2007.
Does ALEXANDRA THEISEN, M.D. prescribe more brand-name or generic drugs?
ALEXANDRA THEISEN, M.D.'s prescribing is 2% brand-name and 98% generic drugs by claim count, with $11K in brand drug costs.
Does ALEXANDRA THEISEN, M.D. prescribe opioids?
Yes, ALEXANDRA THEISEN, M.D. had 834 opioid claims in 2023 with an opioid prescribing rate of 66.3%.
How many Physical Medicine & Rehabilitation Physician providers are there in the US?
There are 15,306 Physical Medicine & Rehabilitation Physician providers across 54 states in the US. The average Physical Medicine & Rehabilitation Physician provider writes 781 Medicare Part D claims per year.
What drugs does ALEXANDRA THEISEN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ALEXANDRA THEISEN, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALEXANDRA THEISEN, M.D. accept Medicare?
ALEXANDRA THEISEN, M.D. appears in CMS Medicare data with 1,257 Part D claims and 174 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALEXANDRA THEISEN, M.D.'s credentials?
ALEXANDRA THEISEN, M.D.'s NPI is 1124169040 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology